Add IBMNAS driver configuration flags

- Add support for IBMNAS volume driver configuration flags.
(nfs_shares_config, nfs_sparsed_volumes, nfs_mount_point_base
nas_ip, nas_login, nas_password)
- Add initialization of nfs_mount_point_base directory,
nfs_shares_config with proper owner and permission settings.
- Updated README.md with ibmnas attributes

Change-Id: I88607740963916ccc26daee5873cca532b00a434
Implements: blueprint ibmnas-chef-support

spec/volume_spec.rb

@@ -52,6 +52,36 @@ describe 'openstack-block-storage::volume' do
       expect(chef_run).to upgrade_package 'python-pywbem'
     end
 
+    context 'IBMNAS Driver' do
+      let(:file) { chef_run.template('/etc/cinder/nfs_shares.conf') }
+      before do
+        node.set['openstack']['block-storage']['volume']['driver'] = 'cinder.volume.drivers.ibm.ibmnas.IBMNAS_NFSDriver'
+        node.set['openstack']['block-storage']['ibmnas']['nas_access_ip'] = '127.0.0.1'
+        node.set['openstack']['block-storage']['ibmnas']['export'] = '/ibm/fs/export'
+      end
+
+      it 'creates IBMNAS shares_config file' do
+        expect(chef_run).to create_template(file.name).with(
+           owner: 'cinder',
+           group: 'cinder',
+           mode: '0600'
+        )
+        expect(chef_run).to render_file(file.name).with_content('127.0.0.1:/ibm/fs/export')
+      end
+
+      it 'installs nfs packages' do
+        expect(chef_run).to upgrade_package 'nfs-common'
+      end
+
+      it 'creates the nfs mount point' do
+        expect(chef_run).to create_directory('/mnt/cinder-volumes').with(
+           owner: 'cinder',
+           group: 'cinder',
+           mode: '0755'
+        )
+      end
+    end
+
     context 'NetApp Driver' do
       describe 'NFS' do
         before do