Disable external repos for parameterized builds
Created by: bmpersc
Based on a discussion regarding sundance failures on the clean build the Framework team decided it was best to just disable all of the packages that come from external repos for non-specialized builds.
Currently there is an option in the configure "Trilinos_EXTRA_REPOSITORIES" that is set to the empty string, but this doesn't seem to be affecting what external repos are pulled in. This needs to be investigated on how to prevent the the external repos from being automatically pulled in.