Storage - escape collation type in create database code pathway

Summary: without escapage here, creating databases fails. Fixes T6251.

Test Plan: ran the command CREATE DATABASE foo COLLATION binary and it failed; ran the command CREATE DATABASE foo2 COLLATION "binary" and it worked; trusting that the %T still works as advertised.

Reviewers: chad, epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T6251

Differential Revision: https://secure.phabricator.com/D10641