Cherry pick NRP's changes from master to October branch#4251

Merged

dsgouda merged 2 commits intoAzure:network-october-releasefrom

anton-evseev:nrp-cherry-pick

Oct 18, 2018

Commits on Oct 17, 2018

Remove error code from swagger (#4103)

vinayada1
authored and
anton-evseev
committed
Modifying example templates : enabling Ipv6 support for Private Peering (#4232)

Abhinav Prakash
authored and
anton-evseev
committed