Revert "Removing OpenNebula code"

This reverts commit 5af67b3295859894c458e94c979834e6a20ffb52.

Change-Id: I0d758b038057af83df007c153a7baa23e974c7c0
Signed-off-by: sousaedu <eduardo.sousa@canonical.com>
diff --git a/requirements.in b/requirements.in
index ba8a966..d3b71f9 100644
--- a/requirements.in
+++ b/requirements.in
@@ -28,6 +28,7 @@
 -r RO-VIM-aws/requirements.in
 -r RO-VIM-azure/requirements.in
 -r RO-VIM-fos/requirements.in
+#-r RO-VIM-opennebula/requirements.in
 -r RO-VIM-openstack/requirements.in
 -r RO-VIM-openvim/requirements.in
 -r RO-VIM-vmware/requirements.in