Make endpoint_type configurable

Allow to specify the endpoint type to use. Not everybody will
want to use publicURL, so let's make this configurable.

Closes-Bug: #1191109
Change-Id: I6f59fded9f9b70fd638ff17ed9fd4d7733cefac5
Fix error in RS Auto Scale properties schema

The Rackspace Auto Scale resource's server networks property should be a
list of maps, not a map of strings.  The property description states
that the it is "Networks to attach to", so the property must be a list.

Change-Id: I6c53a895a820b934f2df7ead0f5732a636a4399d
Closes-Bug: #1270922
Merge "Make endpoint_type configurable"
Merge "Fix error in RS Auto Scale properties schema"