caucase.test,shell/caucase.sh: Run caucase.sh from python test suite.

So caucase.sh gets some regular exercise.
2 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
passed SlapOS.Eggs.UnitTest-Master.Python2

00:14:49

failed SlapOS.Eggs.UnitTest-Master.Python3

00:12:58