Item 1 in #1503967)
Add extra_repos/neutron-master for many plugins
Add extra_repos/neutron-master-stackforge for stackforge plugins
also edit autohelp-wrapper to handle stackforge url
Item 3 in #1503967)
Add object name re-mapping for
networking-midonet
networking-hyperv
networking-bigswitch
networking-edge-vpn
networking-zvm
on autohelp-wrapper
Change-Id: Ib247fed088446c79b7d9e6a9e1adbbc931108a3b
Partial-Bug: #1503967
c77c706b29