Sample-Create accepts invalid counter_types.

[Nisha Kadakia]

sample-create subcommand works perfectly fine with meter_type as gauge, cumulative, or delta, however it doesn't complain if argument values other than these are passed. Example:- I misspelled gauge as guage and the command execution worked fine with no errors reported. Checked the mongo DB and the type was captured as guage.

After execution of above command with invalid argument, other sub commands fail to execute. Example:- meter-list stopped working because it expects only valid values.

Ideally sample-create command execution should throw errors when invalid argument values are passed. This probably will automatically take care of other subsequent errors

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/45344

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/45344
Committed: http://github.com/openstack/ceilometer/commit/42d910d820a4d4fa58ed5f29e00e58793afbb306
Submitter: Jenkins
Branch: master

commit 42d910d820a4d4fa58ed5f29e00e58793afbb306
Author: Gordon Chung <email address hidden>
Date: Thu Sep 5 19:08:07 2013 -0400

    validate counter_type when posting samples

    check to ensure counter_type is valid when posting samples via API

    Change-Id: I097c54f6b410c67b117b07eaf146828766f4852a
    Fixes: bug #1221007