Updates to pipeline-system

For this pull to be merged, ensure that the CS contains:
Operations/glast.org/Pipeline
and provides the properties
Shifter = DN
ShifterGroup = "glast_user"

Needs refinements in the SoftwareTagSystem/ConfigTemplate.cfg to specify access rules as well as replacement of 'glast.org' by some appropriate .getVO() call. 

Getting ready to build v1r0p5 that contains all these changes.