Do not create HAE repos if they don't exist

The repos are optional, and we need to know if they're simply missing.
Merge pull request #2008 from vuntz/optional-hae

Do not create HAE repos if they don't exist
change range and conduit names for bmc network
move bmc network creation ahead of admin node creation
Merge pull request #2010 from waynepallen/pull-req-master-8f95b6a8f7d65bd0c5f0d9052c65f7eb3df0ffef

Correct range name for bmc network [1/1]