tests: replace egrep with grep -E to avoid deprecation warning

https://lists.gnu.org/archive/html/info-gnu/2022-09/msg00001.html

Signed-off-by: Balint Tobik <btobik@redhat.com>

tests/functional/tracing/test-agent-shutdown.sh

@@ -286,7 +286,7 @@ show_procs()
 	local regex
 	regex="(${pattern_list})"
 
-	ps -efww | egrep -i "$regex" || true
+	ps -efww | grep -i -E "$regex" || true
 }
 
 kill_tmux_sessions()
@@ -612,7 +612,7 @@ cleanup()
 
 	# Check that clh socket was deleted
 	if [ $configured_hypervisor = "clh" ] && [ ! -z $clh_socket_path ]; then
-		[ -f $clh_socket_path ] && die "CLH socket path $clh_socket_path was not properly cleaned up" 
+		[ -f $clh_socket_path ] && die "CLH socket path $clh_socket_path was not properly cleaned up"
 	fi
 
 	sudo systemctl restart containerd
@@ -961,7 +961,7 @@ get_addresses()
 
 	if [ $configured_hypervisor = "qemu" ]; then
                 addresses=$(ss -Hp --vsock |\
-                        egrep -v "\<socat\>" |\
+                        grep -v -E "\<socat\>" |\
                         awk '$2 ~ /^ESTAB$/ {print $6}' |\
                         grep ":${EXPECTED_VSOCK_PORT}$")
 	elif [ $configured_hypervisor = "clh" ]; then
@@ -1166,7 +1166,7 @@ validate_agent()
 	# Regular expression that describes possible agent failures
 	local regex="(slog::Fuse|Drain|Custom|serialization error|thread.*panicked|stack backtrace:)"
 
-	egrep -q "$regex" "$log_file" && cat $log_file && die "Found agent error in log file: '$log_file'"
+	grep -q -E "$regex" "$log_file" && cat $log_file && die "Found agent error in log file: '$log_file'"
 
 	local entry
 	entry=$(get_shutdown_test_type_entry "$shutdown_test_type" || true)
@@ -1186,7 +1186,7 @@ validate_agent()
 		# The message the agent writes to stderr just before it exits.
 		local done_msg="\<shutdown complete\>"
 
-		egrep -q "$done_msg" "$log_file" || (cat $log_file && die "missing agent shutdown message")
+		grep -q -E "$done_msg" "$log_file" || (cat $log_file && die "missing agent shutdown message")
 	else
 		# We can only check for the shutdown message if the agent debug
 		# logs are available.

tests/functional/vfio/vfio_fedora_vm_wrapper.sh

@@ -76,7 +76,7 @@ create_user_data() {
 	dnf_proxy=""
 	service_proxy=""
 	docker_user_proxy="{}"
-	environment=$(env | egrep "ghprb|WORKSPACE|KATA|GIT|JENKINS|_PROXY|_proxy" | \
+	environment=$(env | grep -E "ghprb|WORKSPACE|KATA|GIT|JENKINS|_PROXY|_proxy" | \
 	                    sed -e "s/'/'\"'\"'/g" \
 	                        -e "s/\(^[[:alnum:]_]\+\)=/\1='/" \
 	                        -e "s/$/'/" \
@@ -210,7 +210,7 @@ create_config_iso() {
 pull_fedora_cloud_image() {
 	fedora_img="$1"
 	fedora_version=38
-	# Add a version to the image cache, otherwise the tests are going to 
+	# Add a version to the image cache, otherwise the tests are going to
 	# use always the same image without rebuilding it, regardless the version
 	# set in fedora_version
 	fedora_img_cache="${fedora_img}.cache.${fedora_version}"

tests/metrics/cmd/checkmetrics/vendor/golang.org/x/sys/unix/mkerrors.sh

@@ -638,7 +638,7 @@ errors=$(
 signals=$(
 	echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
 	awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print $2 }' |
-	egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64)' |
+	grep -v -E '(SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64)' |
 	sort
 )
 
@@ -648,7 +648,7 @@ echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
 	sort >_error.grep
 echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
 	awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print "^\t" $2 "[ \t]*=" }' |
-	egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64)' |
+	grep -v -E '(SIGSTKSIZE|SIGSTKSZ|SIGRT|SIGMAX64)' |
 	sort >_signal.grep
 
 echo '// mkerrors.sh' "$@"

tests/metrics/density/footprint_data.sh

@@ -200,7 +200,7 @@ function grab_system() {
 	((anon*=1024))
 
 	# Mapped pages
-	local mapped=$(egrep "^Mapped:" /proc/meminfo | awk '{print $2}')
+	local mapped=$(grep -E "^Mapped:" /proc/meminfo | awk '{print $2}')
 	((mapped*=1024))
 
 	# Cached

tests/static-checks.sh

@@ -429,7 +429,7 @@ static_check_license_headers()
 
 		info "Checking $desc"
 
-		local missing=$(egrep \
+		local missing=$(grep \
 			--exclude=".git/*" \
 			--exclude=".gitignore" \
 			--exclude=".dockerignore" \
@@ -475,7 +475,7 @@ static_check_license_headers()
 			--exclude="src/mem-agent/example/protocols/protos/google/protobuf/*.proto" \
 			--exclude="src/libs/*/test/texture/*" \
 			--exclude="*.dic" \
-			-EL $extra_args "\<${pattern}\>" \
+			-EL $extra_args -E "\<${pattern}\>" \
 			$files || true)
 
 		if [ -n "$missing" ]; then
@@ -783,7 +783,7 @@ static_check_docs()
 
 	local exclude_pattern
 
-	# Convert the list of files into an egrep(1) alternation pattern.
+	# Convert the list of files into an grep(1) alternation pattern.
 	exclude_pattern=$(echo "${exclude_doc_regexs[@]}"|sed 's, ,|,g')
 
 	# Every document in the repo (except a small handful of exceptions)
@@ -792,7 +792,7 @@ static_check_docs()
 	do
 		# Check the ignore list for markdown files that do not need to
 		# be referenced by others.
-		echo "$doc"|egrep -q "(${exclude_pattern})" && continue
+		echo "$doc"|grep -q -E "(${exclude_pattern})" && continue
 
 		grep -q "$doc" "$md_links" || die "Document $doc is not referenced"
 	done
@@ -827,7 +827,7 @@ static_check_docs()
 		if [ "$specific_branch" != "true" ]
 		then
 			# If the URL is new on this PR, it cannot be checked.
-			echo "$new_urls" | egrep -q "\<${url}\>" && \
+			echo "$new_urls" | grep -q -E "\<${url}\>" && \
 				info "ignoring new (but correct) URL: $url" && continue
 		fi
 
@@ -925,12 +925,12 @@ static_check_eof()
 	[ "$file" == "Vagrantfile" ] && return
 
 	local invalid=$(cat "$file" |\
-		egrep -o '<<-* *\w*' |\
+		grep -o -E '<<-* *\w*' |\
 		sed -e 's/^<<-*//g' |\
 		tr -d ' ' |\
 		sort -u |\
-		egrep -v '^$' |\
-		egrep -v "$anchor" || true)
+		grep -v -E '^$' |\
+		grep -v -E "$anchor" || true)
 	[ -z "$invalid" ] || die "Expected '$anchor' here anchor, in $file found: $invalid"
 }
 
@@ -957,7 +957,7 @@ static_check_files()
 	then
 		info "Checking all files in $branch branch"
 
-		files=$(git ls-files | egrep -v "/(.git|vendor|grpc-rs|target)/" || true)
+		files=$(git ls-files | grep -v -E "/(.git|vendor|grpc-rs|target)/" || true)
 	else
 		info "Checking local branch for changed files only"
 
@@ -979,7 +979,7 @@ static_check_files()
 
 		# Look for files containing the specified comment tags but
 		# which do not include a github URL.
-		match=$(egrep -H "\<FIXME\>|\<TODO\>" "$file" |\
+		match=$(grep -H -E "\<FIXME\>|\<TODO\>" "$file" |\
 			grep -v "https://github.com/.*/issues/[0-9]" |\
 			cut -d: -f1 |\
 			sort -u || true)
@@ -1294,7 +1294,7 @@ static_check_dockerfiles()
 	linter_cmd+=" --ignore DL3041"
 	# "DL3033 warning: Specify version with `yum install -y <package>-<version>`"
 	linter_cmd+=" --ignore DL3033"
-	# "DL3018 warning: Pin versions in apk add. Instead of `apk add <package>` use `apk add <package>=<version>`" 
+	# "DL3018 warning: Pin versions in apk add. Instead of `apk add <package>` use `apk add <package>=<version>`"
 	linter_cmd+=" --ignore DL3018"
 	# "DL3003 warning: Use WORKDIR to switch to a directory"
 	# See https://github.com/hadolint/hadolint/issues/70