ovirt-node-plugin-vdsm: Bump release to 0.1.2-0

- spec: remove uneeded sed's (BZ#1088218)
- engine_page: add compatiblePort() to src
- engine_page: Display correctly proto for Manage by (BZ#1065401)
- engine_page: Remove Retrieve Certificate button (BZ#1081042)
- engine_page: network is required to register tab (BZ#1064206)

Change-Id: I3a63fbb45bf6fc2888daa3f636094a90e2a62725
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>