Canary deployments for fission functions. (#892)

test/tests/test_router_cache_invalidation.sh

@@ -43,12 +43,12 @@ fission fn create --name $fn --env python --code testDir-$fn/hello.py
 log "rm testDir-$fn"
 rm -rf testDir-$fn
 
-log "Waiting for router to update cache"
-sleep 3
-
 log "Creating route"
 fission route create --function $fn --url /$fn --method GET
 
+log "Waiting for router to update cache"
+sleep 5
+
 http_status=`curl -sw "%{http_code}" http://$FISSION_ROUTER/$fn -o /dev/null`
 log "http_status: $http_status"
 if [ "$http_status" -ne "200" ]; then