Merge topic 'update-submodule-rules' into release

19145dd5 release: follow common-superbuild's paraview/release branch

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !689

.gitmodules

 [submodule "superbuild"]
 	path = superbuild
 	url = https://gitlab.kitware.com/paraview/common-superbuild.git
+	branch = paraview/release