RPC API: Add a StackNotFound exception

Change-Id: Ic109e9f6f5cca3af531ffcd2c9149742442e66d4
Signed-off-by: Zane Bitter <zbitter@redhat.com>
RPC API: Add a StackExists exception

Change-Id: Ia8cb5af80abc7570b938c381d51e41eb7aa0629d
Signed-off-by: Zane Bitter <zbitter@redhat.com>
RPC API: Add a ResourceNotFound exception

Change-Id: If55cd6ca0eab8be9d192e76430aedf1d5a1767c3
Signed-off-by: Zane Bitter <zbitter@redhat.com>
RPC API: Add a ResourceNotAvailable exception

Change-Id: I7f535b7823288b74cbe27f43b645a8d0f3180905
Signed-off-by: Zane Bitter <zbitter@redhat.com>
RPC API: Add a PhysicalResourceNotFound exception

Change-Id: I409f8df9e93809f7267fb09656302082e42753da
Signed-off-by: Zane Bitter <zbitter@redhat.com>
RPC API: Add a WatchRuleNotFound exception

Change-Id: I7abda2fb745b84925edf685b7fced3541d94a8db
Signed-off-by: Zane Bitter <zbitter@redhat.com>