store-sm, repository-hdfs and identity-provider policies

Author: ldematte

plugins/repository-hdfs/src/main/plugin-metadata/entitlement-policy.yaml

@@ -5,3 +5,7 @@ ALL-UNNAMED:
   - write_system_properties:
       properties:
         - hadoop.home.dir
+  - files:
+      - relative_path: "repository-hdfs/"
+        relative_to: config
+        mode: read_write

plugins/store-smb/src/main/plugin-metadata/entitlement-policy.yaml

@@ -0,0 +1,5 @@
+ALL-UNNAMED:
+  - files:
+      - relative_path: "indices/"
+        relative_to: data
+        mode: read_write

x-pack/plugin/identity-provider/src/main/plugin-metadata/entitlement-policy.yaml

@@ -3,3 +3,7 @@ ALL-UNNAMED:
   - write_system_properties:
       properties:
         - org.apache.xml.security.ignoreLineBreaks
+  - files:
+      - relative_path: ""
+        relative_to: config
+        mode: read