[net] Add set/unset org admin rpc
travis-ci: build vala file seperately to avoid bus error
Merge pull request #48 from Chilledheart/travis-ci

travis-ci: build vala file seperately to avoid bus error
Resolve pidfile resource leaks

This patch resolves resource leaks caused by not closing the file streams upon
an write error.
implement of role in user-mgr
implementation of python userrole api