tools/conf/check_uptodate.sh is added in run_tests.sh
For simple, run "run_tests.sh -p" will call it, and get following error:
Failed to collect options from module
cinder.volume.drivers.san.hp.hp_3par_common: No module named hp3parclient
Actually, the hp3parclient is listed in test-requirements.txt, and it is
installed in venv.
the check_uptodate.sh should run in venv to get correct result.
update the error message to update the cindier.conf.sample correctly.
-----------
Test method
-----------
$ pwd
/opt/stack/cinder
$ source .venv/bin/activate; tools/conf/generate_sample.sh
(.venv)$ deactivate
$ ./run_tests.sh -p
Running flake8 ...
// no error emitted here
Fixes Bug #1219197
Change-Id: I9b3eaf3c1a5eb395eefed28bb907685cdef147aa
91e2466f2d