Require SSH

[szechyjs]

I'm not sure where this got changed, but since I updated to the new cookbook that uses omnibus-toolchain openssh-clients doesn't get installed which results in git clones not working.

The following shell command exited with status 128:

    $ git ls-remote "[email protected]:repo.git" "master*"

Output:

    (nothing)

Error:

    error: cannot run ssh: No such file or directory
fatal: unable to fork