Schema.to_schema_type() does not always convert value to schema type

[andersonvom]

If a user defines a parameter in the template (e.g. version number) with a type string and defined allowed values to be things like 9.0, 9.4, etc... Schema.to_schema_type() should convert these to strings, regardless of whether the user enclosed the version numbers in quotes or not.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/112425

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/112425
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=af21176f1a0efdd12400113e66fe9cae0f23af9f
Submitter: Jenkins
Branch: master

commit af21176f1a0efdd12400113e66fe9cae0f23af9f
Author: Anderson Mesquita <email address hidden>
Date: Wed Aug 6 17:48:56 2014 -0400

    Always convert string type params to string

    Schema.to_schema_type() should convert values passed to it to the
    appropriate type. So if the user passed a version number of 9.4 and
    they defined it in the template with a string type, we should get the
    string '9.4' back, instead of the error "The value '9.4' is invalid for
    type 'string'".

    Co-Authored-By: Richard Lee <email address hidden>
    Closes-Bug: #1353701
    Change-Id: If7abd129dc7819c6ac01f9bf7dfdbe397ec09c65