Merge branch 'release/1.0.0beta3' into develop
Remove incremental modeler patch.

The incremental modeling patch is in PythonCollector>=1.1.0. It doesn't
need to be in XenServer too since this version of PythonCollector is a
dependency.
Version 1.0.0beta3 -> 1.0.0.
Merge branch 'release/1.0.0'