Revert "Revert "Refs #5421 Updating system tests.""

This reverts commit c71f8bdad0ed67d79395071042905541e3adb8d7.

It brings back the changes as they should be and allows future merges
to develop without further conflicts
Refs #5421
Refs #5421 Updated system tests.
Merge remote-tracking branch 'origin/master' into feature/5421_IDA_bayes_interface
Merge branch 'feature/5421_IDA_bayes_interface' of github.com:mantidproject/systemtests into feature/5421_IDA_bayes_interface

Conflicts:
	SystemTests/AnalysisTests/ISISIndirectBayesTest.py

Refs #5421
Refs #5421 Fix output workspace names.
Merge remote-tracking branch 'origin/feature/5421_IDA_bayes_interface'