Resolve the following RemovedIn20Warning warning:
Using plain strings to indicate SQL statements without using the
text() construct is deprecated and will be removed in version 2.0.
Ensure plain SQL statements are passed using the text() construct.
Change-Id: I8acdb54d168afa1a7eac270ad6165faa287311ec
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>