Remove multibackend option from plugin

As Cinder is deprecating the use of the DEFAULT stanza for
driver definitions and moving every driver to its own stanza
we are going to force multibacked to be true and therefore
removing the option from the GUI and all other references
to it.

Change-Id: I70bf4ad5c428ec0e0de3322f4da8680b54924d65

deployment_scripts/puppet/manifests/controller.pp

@@ -14,13 +14,9 @@
 #    under the License.
 #
 $plugin_settings = hiera('fuel-plugin-purestorage-cinder')
-$backend_name = 'pure'
-$previous_backends = ''
 
 class { 'plugin_purestorage_cinder::controller' :
-  backend_name   => $backend_name,
-  backends  => $previous_backends,
-  multibackend => $plugin_settings['multibackend'],
+  section   => 'pure',
   glance_image_cache => $plugin_settings['pure_glance_image_cache'],
   glance_image_count => $plugin_settings["pure_glance_cache_count"],
   glance_image_size => $plugin_settings["pure_glance_cache_size"],

deployment_scripts/puppet/modules/plugin_purestorage_cinder/manifests/controller.pp

@@ -14,9 +14,7 @@
 #
 
 class plugin_purestorage_cinder::controller (
-    $backend_name,
-    $backends,
-    $multibackend,
+    $section,
     $glance_image_cache,
     $glance_image_count,
     $glance_image_size,
@@ -58,6 +56,16 @@ class plugin_purestorage_cinder::controller (
     include ::cinder::client
     include ::keystone::client
 
+    ini_subsetting {'enable_cinder_pure_backend':
+      ensure             => present,
+      section            => 'DEFAULT',
+      key_val_separator  => '=',
+      path               => '/etc/cinder/cinder.conf',
+      setting            => 'enabled_backends',
+      subsetting         => "${section}",
+      subsetting_separator => ',',
+    }
+
     package {"purestorage":
       ensure => "installed",
       provider => pip
@@ -70,18 +78,14 @@ class plugin_purestorage_cinder::controller (
       Package[$::cinder::params::volume_package] -> Cinder_config<||>
     }
 
-    if $multibackend{
-      $section = $backend_name
-      cinder_type {'pure_vol':
-        ensure => present,
-        properties => ['volume_backend_name=$section'],
-      }
-      cinder_config {
-        "DEFAULT/default_volume_type": value => 'pure_vol';
-        "DEFAULT/enabled_backends": value => "${backend_name}";
-      }
-    } else {
-      $section = 'DEFAULT'
+#    $section = $backend_name
+    cinder_type {'pure_vol':
+      ensure => present,
+      properties => ['volume_backend_name=pure'],
+    }
+    cinder_config {
+      "DEFAULT/default_volume_type": value => 'pure_vol';
+#      "DEFAULT/enabled_backends": value => "${section}";
     }
 
     if $glance_image_cache{

environment_config.yaml

@@ -1,12 +1,6 @@
 attributes:
   metadata:
     group: 'storage'
-  multibackend:
-    value: true
-    label: 'Multi-backend enabled'
-    description: 'Pure Storage will be used in a multi-backend environment'
-    weight: 10
-    type: "checkbox"
   pure_cg:
     value: "false"
     values:

metadata.yaml

@@ -7,7 +7,7 @@ licenses: ['Apache License Version 2.0']
 authors: ['Simon Dodsley <simon@purestorage.com>']
 homepage: 'https://github.com/openstack/fuel-plugin-purestorage-cinder'
 groups: ['storage::cinder']
-is_hotpluggable: false
+is_hotpluggable: true
 
 releases:
   - os: ubuntu