Related-Bug: #1390392

In case of vCenter orchestration mode,Enable only "Edit IPAM" in
Configure > Networking > IPAM page

Change-Id: Ifba591f0108b6be0c93fae93d4b16971a7380721
(cherry picked from commit 87893ca67734ec807e142a4238901a0c002a6a38)
Merge "Related-Bug: #1390392" into R2.0