GS-11543
Created empty package for common tests.

git-svn-id: svn://pc-lab14/SVN/xap/trunk/openspaces@165444 eb64e737-3616-4df0-8941-5ee2ae88103d
GS-11543
Moved test utilities to common package.

git-svn-id: svn://pc-lab14/SVN/xap/trunk/openspaces@165445 eb64e737-3616-4df0-8941-5ee2ae88103d