Fix issue with logging in to some Junos Devices

Not all juniper devices return "Password:" at the ssh login screen, Some only reply with a small p ("password:"), Because of this i have added an extra case check that will launch the same case.
Tested on Junos 11.4R2.14
Merge pull request #12 from ITJamie/patch-1

Fix issue with logging in to some Junos Devices