Switching sftp from paramiko to sshpass+scp
Technically using scp, change things accordingly
Change root_cmd() to use ssh entirely, instead of paramiko
Remove unused sftp transport
Switch ssh.exec_command to root_cmd (except for ibmsce)
Switch ssh.exec_command to root_cmd for ibmsce
Remove unnecessary ssh definition for paramiko
sshpass is now required
Remove the last bit of paramiko from the code
Remove paramiko as a requirement
Merge pull request #316 from techhat/sshpass

Replace Paramiko with sshpass