Make x86_64->amd64 arch param conversion to match image names

Signed-off-by: Yury Tsarev <yury@upbound.io>

Makefile

@@ -24,6 +24,10 @@ endif
 ###############################
 #		CONSTANTS
 ###############################
+ARCH ?= $(shell uname -m)
+ifeq ($(ARCH), x86_64)
+	ARCH=amd64
+endif
 CLUSTERS_NUMBER ?= 2
 CLUSTER_IDS = $(shell seq $(CLUSTERS_NUMBER))
 CLUSTER_NAME ?= test-gslb
@@ -148,7 +152,7 @@ deploy-test-version: ## Upgrade k8gb to the test version on existing clusters
 
 	@for c in $(CLUSTER_IDS); do \
 		echo -e "\n$(CYAN)$(CLUSTER_NAME)$$c:$(NC)" ;\
-		k3d image import $(REPO):$(SEMVER)-$$(uname -m) -c $(CLUSTER_NAME)$$c ;\
+		k3d image import $(REPO):$(SEMVER)-$(ARCH) -c $(CLUSTER_NAME)$$c ;\
 	done
 
 	@for c in $(CLUSTER_IDS); do \