Add DIR_METADATA files to //components/policy

Generate DIR_METADATA files and remove metadata from OWNERS files for
//components/polic

Change-Id: I997f3ab15d694f1e8a18e415ea70b2b75ce84b65
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2554297Reviewed-by: Maksim Ivanov <emaxx@chromium.org>
Commit-Queue: Norman Rosas <normando@google.com>
Cr-Commit-Position: refs/heads/master@{#831071}

components/policy/DIR_METADATA

+monorail {
+  component: "Enterprise>CloudPolicy"
+}
+
+team_email: "chromium-reviews@chromium.org"

components/policy/OWNERS

@@ -7,6 +7,3 @@ pmarko@chromium.org
 poromov@chromium.org
 rsorokin@chromium.org
 zmin@chromium.org
-
-# COMPONENT: Enterprise>CloudPolicy
-# TEAM: chromium-reviews@chromium.org

components/policy/resources/DIR_METADATA

+monorail {
+  component: "Enterprise"
+}

components/policy/resources/OWNERS

@@ -7,5 +7,3 @@
 # https://sites.google.com/a/chromium.org/dev/developers/how-tos/enterprise/adding-new-policies
 per-file policy_templates.json=set noparent
 per-file policy_templates.json=file://components/policy/resources/ENTERPRISE_POLICY_OWNERS
-
-# COMPONENT: Enterprise

components/policy/tools/DIR_METADATA

+monorail {
+  component: "Enterprise"
+}

components/policy/tools/OWNERS

 hendrich@chromium.org
 ydago@chromium.org
-
-# COMPONENT: Enterprise