ChangeIT#changeDetailsDoesNotRequireIndex should detect when we regress
in adding a dependency to the change index to rendering a single
change's details page.
This commit brings the options in line with PolyGerrit and is more
generous in swallowing an exception in a single UI action that made the
test - hence rendering the page when the index is unavailable - fail.
Change-Id: If3783fd258bcd5a133b01cf1ce41a3522fd9b535
41e6fc98d4