This simply adds a global template variable taken from
LODGEIT_TITLE_OVERRIDE that allows setting the site title for some
minimal customisation.
Previously, the opendev puppet would copy a custom layout.html over
the shipped version. This allows us to simply set a variable and not
have duplicate copies of templates in config managment.
Change-Id: If25dcece0ecd2b7dfc0178c6886559ac2507b28f
Ian Wienand