Add env var for ADDITIONAL_API_PATHS_HANDLED_BY_INGRESS (#2200)

Author: djeebus

iac/provider-gcp/Makefile

@@ -82,7 +82,8 @@ tf_vars := \
 	$(call tfvar, DB_MIN_IDLE_CONNECTIONS) \
 	$(call tfvar, AUTH_DB_MAX_OPEN_CONNECTIONS) \
 	$(call tfvar, AUTH_DB_MIN_IDLE_CONNECTIONS) \
-	$(call tfvar, GCS_GRPC_CONNECTION_POOL_SIZE)
+	$(call tfvar, GCS_GRPC_CONNECTION_POOL_SIZE) \
+	$(call tfvar, ADDITIONAL_API_PATHS_HANDLED_BY_INGRESS)
 
 .PHONY: init
 init: