ganesha: execute calls made with argument whose identifier is 'run_as_root=' is invalid if calls are made to remote machine

[Ramana Raja]

In the ganesha manager module, some execute calls are made with argument whose identifier is 'run_as_root='. See here,
https://github.com/openstack/manila/commit/559b478e8578ab0bf591d29fcb662a9d7a1158da#diff-ccc750d6512ac97d2a7c2744b0991f1bR213
https://github.com/openstack/manila/commit/559b478e8578ab0bf591d29fcb662a9d7a1158da#diff-ccc750d6512ac97d2a7c2744b0991f1bR247
https://github.com/openstack/manila/commit/559b478e8578ab0bf591d29fcb662a9d7a1158da#diff-ccc750d6512ac97d2a7c2744b0991f1bR327

If these execute calls are made to a remote ganesha server they would all error out since for remote execution, processutils's ssh_execute() method is used, and this method does not accept 'run_as_root=False' kwarg.
See here,
https://github.com/openstack/oslo.concurrency/commit/be982c56eeb5eb900bfda3375a236bfe425ac200#diff-ef5a9bcb5e6c774f4e9b635c72a4aadcR217

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/156540

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/156540
Committed: https://git.openstack.org/cgit/openstack/manila/commit/?id=026483e3744fe4182bf4ba7753ebb4818e1edbeb
Submitter: Jenkins
Branch: master

commit 026483e3744fe4182bf4ba7753ebb4818e1edbeb
Author: Ramana Raja <email address hidden>
Date: Sun Feb 15 14:58:02 2015 +0000

    ganesha utils: allow remote execution as root

    Remote execute calls in the ganesha helpers are made using ganesha
    utils's SSHExecutor object that uses processutils's ssh_execute()
    method. But processutils's ssh_execute() method unlike processutils's
    execute() method does not accept an argument whose identifier is
    'run_as_root=', necessary to execute commands with super user
    privilege. So allow 'run as root' behavior in remote execution by
    prepending 'sudo' to the command passed to processutils's ssh_execute()
    method, in the SSHExecutor's __call__() method.

    Change-Id: I3c9f9837b692b06bad15341d09ce5b7c4dfa7268
    Closes-Bug: #1422255