Hi, I'm using the bluemixcloudfoundry provider in my automated deployment and have found an issue that I think should be a fairly straightforward fix:

When the provider issues the cf login command, in my case it interactively requests which organization we are logging into and so the build freezes.

Log:

Authenticate deployment
$ ./cf api api.eu-gb.bluemix.net
Setting api endpoint to api.eu-gb.bluemix.net...
OK
api endpoint:   https://api.eu-gb.bluemix.net
api version:    2.147.0
Not logged in. Use 'cf login' or 'cf login --sso' to log in.
$ ./cf login -u apikey -p ********************
API endpoint: https://api.eu-gb.bluemix.net
Authenticating...
OK
Select an org:
1. One of My Orgs
2. Another Organization
3. Personal Projects

I believe that the login command should also use the -o argument to select the Organization so that it doesn't prompt for it. It might be worth adding the -s space argument in as well.

I think the fix should be here: https://github.com/travis-ci/dpl/blob/master/lib/dpl/providers/bluemixcloudfoundry.rb#L37

Change the line to:

login:   './cf login -u %{username} -p %{password} -o %{organization} -s %{space}',

I'm happy to submit a PR, but thought it best to run it past the travis team in an issue first.