Bug 903071: bypass test_ssh_connectivity if ssh key is not uploaded
Don't say anything, since user expressly told us not to upload the key.
Fix up specs.

wizard.rb: rest_client can be nil during the spec run
wizard_spec.rb: set up stubs correctly at various stages of the spec runs so that wizard behaves correctly.
Put code where they belong.
Automatic commit of package [rhc] release [1.3.7-1].
Merge pull request #284 from BanzaiMan/bz903071

Merged by openshift-bot
Automatic commit of package [rhc] release [1.3.8-1].
bump_minor_versions for sprint 23
Automatic commit of package [rhc] release [1.4.1-1].