[stable/phabricator] Release 0.5.6 (#3317)

* phabricator: update to `bitnami/phabricator:2017.52.0-r1`

* phabricator: bump chart version to `0.5.6`

* adds OWNERS file

stable/phabricator/Chart.yaml

@@ -1,5 +1,5 @@
 name: phabricator
-version: 0.5.5
+version: 0.5.6
 appVersion: 2017.52.0
 description: Collection of open source web applications that help software companies build better software.
 keywords:

stable/phabricator/OWNERS

@@ -0,0 +1,8 @@
+approvers:
+- prydonius
+- tompizmor
+- sameersbn
+reviewers:
+- prydonius
+- tompizmor
+- sameersbn

stable/phabricator/values.yaml

@@ -1,7 +1,7 @@
 ## Bitnami Phabricator image version
 ## ref: https://hub.docker.com/r/bitnami/phabricator/tags/
 ##
-image: bitnami/phabricator:2017.52.0-r0
+image: bitnami/phabricator:2017.52.0-r1
 
 ## Specify a imagePullPolicy
 ## Defaults to 'Always' if image tag is 'latest', else set to 'IfNotPresent'