gerrit: add component ownership to plugin tests

Change-Id: I6eba54db618113eaf2136f086bc3dc51cf483360

Author: logan-connolly

packages/cmk-plugins/tests/cmk/plugins/gerrit/OWNERS

@@ -0,0 +1,11 @@
+set noparent  # don't inherit owners information from parent folders
+
+file:/component_owners/plugins_gerrit/OWNERS_DEFINITION
+
+# Please
+#  - don't add individual owners here but provide a reference to an OWNERS_DEFINITION file instead
+#  - consider a `per-file <PATH>=set noparent` line for each `per-file` rule
+#
+# Find information about code-owners (+ find-owners syntax) here:
+#  - https://android-review.googlesource.com/plugins/code-owners/Documentation/backend-find-owners-cookbook.html
+#  - https://android-review.googlesource.com/plugins/code-owners/Documentation/backend-find-owners.html#syntax