Incorrect validation and exception message for server name with whitespace

[Rohit Karajgi]

Create a server by passing a name having just one or more whitespaces, such as ' ' or ' '.

Expected error message:
HTTP 400 Bad Request. Server name should contain at least 1 character.

Actual error message:
Error: Server name has less than 1 characters. (HTTP 400) (Request-ID: req-af94d291-af62-4edf-a160-f21a8efa7851)

There is no validation performed for single or multiple whitespaces in server name. The above error
message is also misleading (less than 1 characters??)

[Hirofumi Ichihara (ichihara-hirofumi)]

nova/locale/en_US/LC_MESSAGES/nova.po should be also fixed because "256 characters" is bug.

msgid "%(name)s has less than %(min_length)s characters."
msgstr "Server name must be less than 256 characters."

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/39877

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/39877
Committed: http://github.com/openstack/nova/commit/6f47afd4d65bd8b382d01d8b552bc242d8809b23
Submitter: Jenkins
Branch: master

commit 6f47afd4d65bd8b382d01d8b552bc242d8809b23
Author: Hirofumi Ichihara <email address hidden>
Date: Fri Aug 2 17:27:37 2013 +0900

    Fix message for server name with whitespace

    Change-Id: I9007ada4db6502da084fe44ab585e62e689e2f4f
    Fixes: bug #1207625