removed gluster 3.8 component

Change-Id: Ic80810a74b013a9a964da2324fb9dbfa25ea366a
diff --git a/init.yml b/init.yml
index 75554ff..cfb8049 100644
--- a/init.yml
+++ b/init.yml
@@ -242,7 +242,6 @@
             distributions:
             - ubuntu-xenial/stable
         mirantis_openstack_xenial_glusterfs:
-          components: '3.8'
           publisher:
             distributions:
             - ubuntu-xenial/glusterfs/stable