Documentation: Add information on "ctest -S" to documentation

Add a section to the RunningandUploadingTests.rst file that describes the
dashboard branch of the VistA git repository and the two files that are
needed to use the "ctest -S" capability.

OSEHRA-Id: http://issues.osehra.org/browse/OAT-70
Change-Id: I919b1830408997d0f90b439bb5a76bda053eafae
Merge "Documentation: Add information on "ctest -S" to documentation"