Add *~ to .gitignore
Add *~ to .gitignore

Signed-off-by: Taku Fukushima <48ddf7139da17a0278f1f27e611ac6b9304f94b2@midokura.com>

midonet/midonet-kubernetes-prototype,tfukushima/midonet-kubernetes,midonet/midonet-kubernetes-prototype,tfukushima/midonet-kubernetes