Add ansible nfs role

This commit adds role for creating /dockerdata-nfs
and exporting i over nfs for later use during onap deployment.

Change-Id: I0ea8e858d581534b983eaab6e1ee570068fc623c
Issue-ID: OOM-1551
Signed-off-by: Michal Zegan <m.zegan@samsung.com>
diff --git a/ansible/roles/nfs/templates/exports.j2 b/ansible/roles/nfs/templates/exports.j2
new file mode 100644
index 0000000..1f6956c
--- /dev/null
+++ b/ansible/roles/nfs/templates/exports.j2
@@ -0,0 +1,3 @@
+{% for host in groups.kubernetes[1:] -%}
+    {{ nfs_mount_path }}  {{ hostvars[host].ansible_host }}(rw,sync,no_root_squash,no_subtree_check)
+{% endfor %}