Add nexus ansible role

This role deploys the internal nexus used as
offline source of docker images/npm packages for onap.

Change-Id: Iaf398eb03614749d2b3c100c241726144ccae1a0
Issue-ID: OOM-1551
Signed-off-by: Michal Zegan <m.zegan@samsung.com>
diff --git a/ansible/roles/nexus/defaults/main.yml b/ansible/roles/nexus/defaults/main.yml
new file mode 100644
index 0000000..57a79f9
--- /dev/null
+++ b/ansible/roles/nexus/defaults/main.yml
@@ -0,0 +1,2 @@
+#Defaults to install, can be set to configure.
+phase: install