ci: Add get_from_kata_deps()

First of all, I'm 100% aware that I'm duplicating this function here as
I've copied it from the packaging stuff, and I'm not exactly proud of
that.

However, right now it seems a little bit premature to combine that set
of scripts with this set of scripts in a single one and make them used
by both pieces of our project.

Anyways, this functions helps to get information from the
`versions.yaml` file, and it'll be used as part of the cri-containerd
tests and a few others in the future.

Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>

tests/common.bash

@@ -341,4 +341,13 @@ function ensure_yq() {
     INSTALL_IN_GOPATH=true "${repo_root_dir}/ci/install_yq.sh"
 }
 
+# dependency: What we want to get the version from the versions.yaml file
+function get_from_kata_deps() {
+        local dependency="$1"
+        versions_file="${repo_root_dir}/versions.yaml"
 
+        command -v yq &>/dev/null || die 'yq command is not in your $PATH'
+        result=$("yq" read -X "$versions_file" "$dependency")
+        [ "$result" = "null" ] && result=""
+        echo "$result"
+}