test(grpc): Test tags on outputs service

Signed-off-by: Jason Dellaluce <jasondellaluce@gmail.com>

test/falco_tests.yaml

@@ -721,7 +721,7 @@ trace_files: !mux
     detect: True
     detect_level: WARNING
     rules_file:
-      - rules/single_rule.yaml
+      - rules/single_rule_with_tags.yaml
     conf_file: confs/grpc_unix_socket.yaml
     trace_file: trace_files/cat_write.scap
     run_duration: 5
@@ -745,6 +745,10 @@ trace_files: !mux
         # For the hostname, since we don't know that beforehand,
         # only check the field presence
         - "hostname: "
+        #tags
+        - "tags: \"filesystem\""
+        - "tags: \"process\""
+        - "tags: \"testing\""
 
   detect_counts:
     detect: True

test/rules/single_rule_with_tags.yaml

@@ -0,0 +1,34 @@
+#
+# Copyright (C) 2021 The Falco Authors.
+#
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+- required_engine_version: 2
+
+- list: cat_binaries
+  items: [cat]
+
+- list: cat_capable_binaries
+  items: [cat_binaries]
+
+- macro: is_cat
+  condition: proc.name in (cat_capable_binaries)
+
+- rule: open_from_cat
+  desc: A process named cat does an open
+  condition: evt.type=open and is_cat
+  output: "An open was seen (command=%proc.cmdline)"
+  priority: WARNING
+  tags: [filesystem, process, testing]