Ignore coverage HTML directory and MANIFEST.
Ignore coverage HTML directory and MANIFEST.

Change-Id: I5286cd1b066da11eef98dbfea9252366ca3ffd9c
Signed-off-by: Peter Portante <1768998915a9d75a38099dd28e7e828cd5a8c6fe@redhat.com>

tobegit3hub/swift-bench,tobegit3hub/swift-bench,openstack/swift-bench,jeblair/swift-bench,openstack/swift-bench