Delete redundant period in ManilaException messages

[zhongjun]

--Delete redundant period in the command echo.
For example:
stack@ubuntu:~$ manila shrink ec0f881e-8343-4e6c-8839-16dfe7acaec1 0
ERROR: Invalid share: Share ec0f881e-8343-4e6c-8839-16dfe7acaec1 status must in (available, shrinking_possible_data_loss_error) to shrink, but current status is: shrinking_error..

stack@ubuntu:~$ manila extend ec0f881e-8343-4e6c-8839-16dfe7acaec1 0
ERROR: Invalid share: Share ec0f881e-8343-4e6c-8839-16dfe7acaec1 status must be 'available' to extend, but current status is: shrinking_error..

stack@ubuntu:~$ manila extend ec0f881e-8343-4e6c-8839-16dfe7acaec1 1
ERROR: Invalid input received: New size for extend must be greater than current size. (current: 4, extended: 1)..

stack@ubuntu:~$ manila shrink ec0f881e-8343-4e6c-8839-16dfe7acaec1 0
ERROR: Invalid input received: New size for shrink must be less than current size and greater than 0 (current: 4, new: 0).

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/192637
Committed: https://git.openstack.org/cgit/openstack/manila/commit/?id=16559b8472fb706e95b9e1dd1264475dec1b1d1e
Submitter: Jenkins
Branch: master

commit 16559b8472fb706e95b9e1dd1264475dec1b1d1e
Author: zhongjun <email address hidden>
Date: Thu Jun 18 05:16:31 2015 +0800

    Delete redundant period in ManilaException messages

    --Delete redundant period in the command echo.

    Change-Id: I0081643b0ba432b327a22473856d06b63f307873
    Closes-Bug: #1466062