Enable yamllint checks

- brackets
- braces
- colon
- commas
- comments
- document-end
- document-start
- empty-lines
- hyphens
- indentation
- new-line-at-end-of-file
- new-lines
- octal-values
- trailing-spaces

with corresponding code adjustment.

Also add yamllint.conf under the check.

Change-Id: Ie6251c9063c9c99ebe7c6db54c65d45d6ee7a1d4

designate/values.yaml

@@ -15,6 +15,7 @@
 # Declare name/value pairs to be passed into your templates.
 # name: value
 
+---
 release_group: null
 
 labels:
@@ -66,11 +67,11 @@ images:
 
 pod:
   affinity:
-      anti:
-        type:
-          default: preferredDuringSchedulingIgnoredDuringExecution
-        topologyKey:
-          default: kubernetes.io/hostname
+    anti:
+      type:
+        default: preferredDuringSchedulingIgnoredDuringExecution
+      topologyKey:
+        default: kubernetes.io/hostname
   mounts:
     designate_api:
       init_container: null
@@ -452,7 +453,7 @@ conf:
     zone_primary_or_admin: ('PRIMARY':%(zone_type)s and rule:admin_or_owner) OR ('SECONDARY':%(zone_type)s AND is_admin:True)
     default: rule:admin_or_owner
     all_tenants: rule:admin
-    edit_managed_records : rule:admin
+    edit_managed_records: rule:admin
     use_low_ttl: rule:admin
     get_quotas: rule:admin_or_owner
     get_quota: rule:admin_or_owner
@@ -827,3 +828,4 @@ manifests:
   service_api: true
   service_mdns: true
   service_ingress_api: true
+...