CLOUDIFY-2217 added blocking init(blockingAfterPropertiesSet) method to enable esm to perform blocking tasks safely.

git-svn-id: svn://pc-lab14/SVN/xap/trunk/openspaces@161582 eb64e737-3616-4df0-8941-5ee2ae88103d
GS-803 Build version advanced to 10491-250

git-svn-id: svn://pc-lab14/SVN/xap/trunk/openspaces@161583 eb64e737-3616-4df0-8941-5ee2ae88103d