Config option "enabled_share_protocols" is case-sensitive

[Yogesh]

Manila api could not recognize the lower case value (eg. cifs) provided in "enabled_share_protocols".
Therefore, failed to start with below error -

cd /opt/stack/manila && /usr/local/bin/manila-api --config-file /etc/manila/manila.conf
Traceback (most recent call last):
  File "/usr/local/bin/manila-api", line 10, in <module>
    sys.exit(main())
  File "/opt/stack/manila/manila/cmd/api.py", line 48, in main
    config.verify_share_protocols()
  File "/opt/stack/manila/manila/common/config.py", line 179, in verify_share_protocols
    msg += _("Please specify one or more protocols using "
  File "/usr/local/lib/python2.7/dist-packages/oslo_i18n/_message.py", line 154, in __add__
    raise TypeError(msg)
TypeError
m-api failed to start

Expected behavior - This option needs to be case-insensitive.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/204566

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/204566
Committed: https://git.openstack.org/cgit/openstack/manila/commit/?id=c017947f582eb582b538ab08c06be2d64777a2b1
Submitter: Jenkins
Branch: master

commit c017947f582eb582b538ab08c06be2d64777a2b1
Author: Valeriy Ponomaryov <email address hidden>
Date: Wed Jul 22 14:49:50 2015 +0300

    Make config opt 'enabled_share_protocols' verification case insensitive

    Make opt 'enabled_share_protocols' expect share protocol names using any case.
    Also, remove concatenation of translated messages and make explicit
    unicode-transformation or these messages that is required when lazy translation
    is enabled. That is case of Manila.

    See http://docs.openstack.org/developer/oslo.i18n/usage.html#lazy-translation

    Change-Id: Iadf41abd5ac62fcce0c0f63cd9a376a2c6eadd6e
    Closes-Bug: #1475668