refactor ansible code in to ansible-2.0 folder, and created space for ansible-2.10

ansible-2.0/roles/glusterfs/tasks/main.yml

@@ -0,0 +1,20 @@
+---
+# main tasks for installing glusterfs
+
+
+# install packages
+- name: Update apt cache.
+  apt: update_cache=yes cache_valid_time=86400
+
+- name: Ensure glusterfs server is installed.
+  apt: "name={{ item }} state=installed"
+  with_items:
+    - glusterfs-server
+    - xfsprogs
+    - xfsdump
+
+- include: manage_volumes.yml
+
+- include: prometheus_exporter.yml
+
+