Change default Git repo for Jeepyb and Zuul

Change default Git repo to the Trafodion Github version for Jeepyb
and Zuul. This is needed due to the customizations we have made.

Change-Id: Iebe7deeb2c7f8a1112cff6dbbde9c494429d3c4c
Closes-Bug: 1353630
Closes-Bug: 1361327