Add unit-tests for --help/--version as common options
Add unit-tests for --help/--version as common options

After reorganizing the way we process options, we can finally add a
test that all program personalities accept --help and --version and
that they exit early for these two.

This trivial patch has a higher than expected impact on the coverage,
as the use of short options finally enforces evaluation of the short
option names, thus it affects more than just the help/version options.

Signed-off-by: Iustin Pop <acf83a5274f31a43af6b914614365999469c1a31@google.com>
Reviewed-by: René Nussbaumer <bc755ac45a0e799d1d490cba76febc56d80cc5fc@google.com>

yiannist/ganeti,andir/ganeti,onponomarev/ganeti,yiannist/ganeti,yiannist/ganeti,mbakke/ganeti,ganeti/ganeti,leshchevds/ganeti,grnet/snf-ganeti,ganeti-github-testing/ganeti-test-1,ganeti-github-testing/ganeti-test-1,ganeti/ganeti,leshchevds/ganeti,mbakke/ganeti,andir/ganeti,leshchevds/ganeti,apyrgio/ganeti,ganeti/ganeti,onponomarev/ganeti,dimara/ganeti,dimara/ganeti,apyrgio/snf-ganeti,apyrgio/ganeti,andir/ganeti,bitemyapp/ganeti,grnet/snf-ganeti,bitemyapp/ganeti,apyrgio/snf-ganeti,mbakke/ganeti