Fix glance config generation when using NFS

This commit sets the 'tripleo::glance::nfs_mount::edit_fstab' variable
to false to prevent the glance_api to write to /etc/fstab and fail in
the case we're using an NFS backend.

This also updates the NFS mount option and mount point to align with
the config from the puppet-tripleo module at:

https://github.com/openstack/puppet-tripleo/blob/master/manifests/glance/nfs_mount.pp

Change-Id: Ied27fac67d28b3104441ada469942a19e3c07a89
Closes-Bug: #1732928

docker/services/glance-api.yaml

@@ -57,7 +57,7 @@ parameters:
       NFS share to mount for image storage (when GlanceNfsEnabled is true)
     type: string
   GlanceNfsOptions:
-    default: 'intr,context=system_u:object_r:glance_var_lib_t:s0'
+    default: '_netdev,bg,intr,context=system_u:object_r:glance_var_lib_t:s0'
     description: >
       NFS mount options for image storage (when GlanceNfsEnabled is true)
     type: string
@@ -104,6 +104,7 @@ outputs:
           - get_attr: [GlanceApiPuppetBase, role_data, config_settings]
           - get_attr: [GlanceLogging, config_settings]
           - glance::api::sync_db: false
+          - tripleo::glance::nfs_mount::edit_fstab: false
       logging_source: {get_attr: [GlanceApiPuppetBase, role_data, logging_source]}
       logging_groups: {get_attr: [GlanceApiPuppetBase, role_data, logging_groups]}
       service_config_settings: {get_attr: [GlanceApiPuppetBase, role_data, service_config_settings]}
@@ -211,7 +212,7 @@ outputs:
         - - name: Mount NFS on host
             vars:
               nfs_backend_enable: {get_param: GlanceNfsEnabled}
-            mount: name=/var/lib/glance src="{{item.NFS_SHARE}}" fstype=nfs4 opts="{{item.NFS_OPTIONS}}" state=mounted
+            mount: name=/var/lib/glance/images src="{{item.NFS_SHARE}}" fstype=nfs4 opts="{{item.NFS_OPTIONS}}" state=mounted
             with_items:
               - NFS_SHARE: {get_param: GlanceNfsShare}
                 NFS_OPTIONS: {get_param: GlanceNfsOptions}

environments/storage/glance-nfs.yaml

@@ -11,7 +11,7 @@
 parameter_defaults:
   # NFS mount options for image storage (when GlanceNfsEnabled is true)
   # Type: string
-  GlanceNfsOptions: intr,context=system_u:object_r:glance_var_lib_t:s0
+  GlanceNfsOptions: _netdev,bg,intr,context=system_u:object_r:glance_var_lib_t:s0
 
   # NFS share to mount for image storage (when GlanceNfsEnabled is true)
   # Type: string

puppet/services/glance-api.yaml

@@ -101,7 +101,7 @@ parameters:
       NFS share to mount for image storage (when GlanceNfsEnabled is true)
     type: string
   GlanceNfsOptions:
-    default: 'intr,context=system_u:object_r:glance_var_lib_t:s0'
+    default: '_netdev,bg,intr,context=system_u:object_r:glance_var_lib_t:s0'
     description: >
       NFS mount options for image storage (when GlanceNfsEnabled is true)
     type: string