Add creedence release

Signed-off-by: John Else <john.else@citrix.com>

Conflicts:
	ocaml/idl/datamodel.ml
	ocaml/idl/datamodel_types.ml
Fix up release versions in datamodel

Signed-off-by: John Else <john.else@citrix.com>
Fix up release versions in upgrade rules

Signed-off-by: Si Beaumont <simon.beaumont@citrix.com>
Merge pull request #1735 from simonjbeaumont/creedence-versioning

Fix up release versions in master branch