Bug 1013684 Generate unique password with bash sdk and show it the user

Use bash sdk to generate unique password in the deploy script and show it to the user (on the webui too).
Also, remove the unnecessary initial password file.

[Bug 1013684](https://bugzilla.redhat.com/show_bug.cgi?id=1013684)

[Trello card](https://trello.com/c/RsENlXNV/257-5-fix-5-existing-bugs)