+++ This bug was initially created as a clone of Bug #1136296 +++

Description of problem: 

    Currently geo-replication needs password-less ssh to be set up using the default key "~/.ssh/id_rsa" located at root users home directory. It should be possible to create password-less ssh using other keyfile, and an option to geo-replication create push-pem command to specify this keyfile. Geo-replication must use this key for further operations. 

    When setting geo-replication through RHSC, if the key file  "~/.ssh/id_rsa"  is not present . We will have to generate the key and use it. But since the location of keyfile is root users home directory. If root user runs ssh-keygen or deletes the keyfile at a later point of time the keyfile used for geo-replication will be gone and geo-replication stops functioning. So if we can specify a keyfile to geo-replication, we can have the keyfile stored in a safe location where it is not easily meddled by users. 

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