core: Rename all management networks and profiles

The rename stored procedure used to only rename one management
network, but there actually may be multiple ones (in case multiple DCs
exist). Also, the procedure neglected to rename the corresponding vNIC
profiles. This patch aims to correct these.

Change-Id: I59e6278f283cafdc2f865e18129349f5905f6d3a
Bug-Url: https://bugzilla.redhat.com/1077772
Signed-off-by: Lior Vernia <lvernia@redhat.com>