Follow oslo.i18n conventions for log messages

[Andreas Jaeger]

We should follow the following conventions for log strings and their translation:
* Use _LI and friends.
* Use "," instead of % so that lazy evaluation of debug messages is possible.

[Amrith Kumar (amrith)]

Per conversation with Andreas Jaeger, I'm assigning this to myself.

[Amrith Kumar (amrith)]

Launchpad auto-assignment ;)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/119402
Committed: https://git.openstack.org/cgit/openstack/trove/commit/?id=ceac1db26303013c5a4b75ab5041944e49234d50
Submitter: Jenkins
Branch: master

commit ceac1db26303013c5a4b75ab5041944e49234d50
Author: Andreas Jaeger <email address hidden>
Date: Fri Sep 5 17:38:10 2014 +0200

    Update some log calls for translation and lazyness

    Update log calls to use _LI and friends.
    Follow oslo.i18n recommendation to use "," instead of % so that
    lazy evaluation of debug messages is possible.

    For details about tagging, see http://docs.openstack.org/developer/oslo.i18n/guidelines.html#log-translation

    Partial-Bug: #1379001

    Change-Id: I4aff674555945e6097283770fe77abecfebd740e

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/362702
Committed: https://git.openstack.org/cgit/openstack/python-troveclient/commit/?id=18bf918086bf2a8300f0cc602e69eefc4f4aae24
Submitter: Jenkins
Branch: master

commit 18bf918086bf2a8300f0cc602e69eefc4f4aae24
Author: jiansong <email address hidden>
Date: Tue Aug 30 01:37:53 2016 -0700

    Use i18n for shell.py

    Help msg and output should support,This can be beneficial to
    the string type

    Partial-Bug: #1379001
    Change-Id: I7d12aead49f5771f0762533ce9f53e477367101c