Add cinder volume ISCSI resource

Add ISCSI backend as enabled default for the
cinder_volume resource. Note, cannot be decoupled
as a separate resource because of the external
puppet class reference hardcoded upstream.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>

resources/cinder_volume_puppet/README.md

@@ -1,3 +1,8 @@
 # Cinder Volume resource for puppet handler
 
-Setup and configure the cinder volume service
+Setup and configure the cinder volume service.
+Configure ISCSI volume backend for cinder volume nodes, if specified
+(Default true)
+
+source https://github.com/openstack/puppet-cinder/blob/5.1.0/manifests/volume/iscsi.pp
+source https://github.com/openstack/puppet-cinder/blob/5.1.0/manifests/volume.pp

resources/cinder_volume_puppet/actions/run.pp

@@ -1,6 +1,12 @@
 $resource = hiera($::resource_name)
 
 $package_ensure    = $resource['input']['package_ensure']['value']
+$use_iscsi_backend    = $resource['input']['use_iscsi_backend']['value']
+
+$iscsi_ip_address  = $resource['input']['iscsi_ip_address']['value']
+$volume_driver     = $resource['input']['volume_driver']['value']
+$volume_group      = $resource['input']['volume_group']['value']
+$iscsi_helper      = $resource['input']['iscsi_helper']['value']
 
 include cinder::params
 
@@ -14,3 +20,12 @@ class {'cinder::volume':
   enabled           => true,
   manage_service    => true,
 }
+
+if $use_iscsi_backend {
+  class {'cinder::volume::iscsi':
+    iscsi_ip_address  => $iscsi_ip_address,
+    volume_driver     => $volume_driver,
+    volume_group      => $volume_group,
+    iscsi_helper      => $iscsi_helper,
+  }
+}

resources/cinder_volume_puppet/meta.yaml

@@ -6,6 +6,22 @@ input:
     package_ensure:
       schema: str
       value: 'present'
+    iscsi_ip_address:
+      schema: str
+      value: '127.0.0.1'
+    volume_driver:
+      schema: str
+      value: 'cinder.volume.drivers.lvm.LVMISCSIDriver'
+    volume_group:
+      schema: str
+      value: 'cinder-volumes'
+    iscsi_helper:
+      schema: str
+      value: 'tgtadm'
+
+    use_iscsi_backend:
+      schema: bool
+      value: true
 
     git:
       schema: {repository: str!, branch: str!}