Make optional bundle group to install cloud dependencies
Job #19895 failed for b566104d04ebe89d724c089491d9ba478b20d1a6:
Sep 28 09:23:23 = using cloud vendor credentials `platform_ci`.
Sep 28 09:23:23 = bailing out
Sep 28 09:23:23 - error The 'vm' command requires the gem 'fog-aws'. Please run `gem install fog-aws` and try again.
Sep 28 09:23:23 - (make sure you install the gem in the ruby 2.1.5 environment)
in leap_platform/tests/platform-ci/setup.sh
we install leap_cli as bundle.
It would be nice to have a simple way of installing leap_cli bundled together with fog_aws.