Issue

• When trying to add node host using oo-install script below error is seen:

/usr/lib/ruby/1.8/tempfile.rb:131:in `exist?': can't convert nil into String (TypeError)
        from /usr/lib/ruby/1.8/tempfile.rb:131:in `delete'
        from /tmp/oo-install-ose-20140219-1602/workflows/enterprise_deploy/launcher.rb:217:in `run_on_host'
        from /tmp/oo-install-ose-20140219-1602/workflows/enterprise_deploy/launcher.rb:229:in `call'
        from /tmp/oo-install-ose-20140219-1602/workflows/enterprise_deploy/launcher.rb:229:in `run_on_host'
        from /tmp/oo-install-ose-20140219-1602/workflows/enterprise_deploy/launcher.rb:425
        from /tmp/oo-install-ose-20140219-1602/workflows/enterprise_deploy/launcher.rb:117:in `call'
        from /tmp/oo-install-ose-20140219-1602/workflows/enterprise_deploy/launcher.rb:117:in `fork_and_run'
        from /tmp/oo-install-ose-20140219-1602/workflows/enterprise_deploy/launcher.rb:115:in `fork'
        from /tmp/oo-install-ose-20140219-1602/workflows/enterprise_deploy/launcher.rb:115:in `fork_and_run'
        from /tmp/oo-install-ose-20140219-1602/workflows/enterprise_deploy/launcher.rb:424
        from /tmp/oo-install-ose-20140219-1602/workflows/enterprise_deploy/launcher.rb:423:in `each'
        from /tmp/oo-install-ose-20140219-1602/workflows/enterprise_deploy/launcher.rb:423
/tmp/oo-install-ose-20140219-1602/workflows/enterprise_deploy/launcher.rb:129:in `load': end of file reached (EOFError)
        from /tmp/oo-install-ose-20140219-1602/workflows/enterprise_deploy/launcher.rb:129:in `read_fork_result'
        from /tmp/oo-install-ose-20140219-1602/workflows/enterprise_deploy/launcher.rb:134:in `wait_and_report'
        from /tmp/oo-install-ose-20140219-1602/workflows/enterprise_deploy/launcher.rb:134:in `select'
        from /tmp/oo-install-ose-20140219-1602/workflows/enterprise_deploy/launcher.rb:134:in `wait_and_report'
        from /tmp/oo-install-ose-20140219-1602/workflows/enterprise_deploy/launcher.rb:428