Fixes Opt types in glance/notifier/notify_kombu.py
Fixes Opt types in glance/notifier/notify_kombu.py

Changed rabbit_retry_backoff and rabbit_retry_max_backoff to IntOpt.

Fixes bug #1201697

Change-Id: Ia1a74b6bb2873e59677a7fea6652a6c006f38175

sigmavirus24/glance,darren-wang/gl,tanglei528/glance,redhat-openstack/glance,paramite/glance,vuntz/glance,dims/glance,jumpstarter-io/glance,saeki-masaki/glance,scripnichenko/glance,paramite/glance,JioCloud/glance,stevelle/glance,ozamiatin/glance,sigmavirus24/glance,ntt-sic/glance,JioCloud/glance,darren-wang/gl,klmitch/glance,cloudbau/glance,akash1808/glance,takeshineshiro/glance,rajalokan/glance,citrix-openstack-build/glance,akash1808/glance,rickerc/glance_audit,kfwang/Glance-OVA-OVF,openstack/glance,takeshineshiro/glance,jumpstarter-io/glance,SUSE-Cloud/glance,redhat-openstack/glance,ozamiatin/glance,scripnichenko/glance,vuntz/glance,dims/glance,openstack/glance,wkoathp/glance,rickerc/glance_audit,kfwang/Glance-OVA-OVF,openstack/glance,cloudbau/glance,saeki-masaki/glance,klmitch/glance,rajalokan/glance,citrix-openstack-build/glance,tanglei528/glance,SUSE-Cloud/glance,wkoathp/glance,ntt-sic/glance,stevelle/glance