feat: clean task in Makefile

This update is beneficial for enabling multiarch support. By
default, some tooling is downloaded specifically for amd64. Even
with changes in the scripts, the tool does not get updated.

Signed-off-by: Nestor Acuna Blanco <[email protected]>

Makefile

@@ -38,7 +38,8 @@ E2E_SUITES = \
 	test/e2e/workflow \
 	test/e2e/monitoring
 
-BIN_DIR = $(CURDIR)/build/_output/bin/
+OUTPUT_DIR = $(CURDIR)/build/_output/
+BIN_DIR = $(OUTPUT_DIR)/bin/
 export GOROOT=$(BIN_DIR)/go/
 export GOBIN = $(GOROOT)/bin/
 export PATH := $(GOBIN):$(PATH)
@@ -223,6 +224,9 @@ lint-monitoring:
 	GOBIN=$$(pwd)/build/_output/bin/ $(GO) install -mod=mod github.com/kubevirt/monitoring/monitoringlinter/cmd/monitoringlinter@e2be790
 	$(MONITORING_LINTER) ./...
 
+clean:
+	rm -rf $(OUTPUT_DIR)
+
 .PHONY: \
 	$(E2E_SUITES) \
 	all \
@@ -257,5 +261,6 @@ lint-monitoring:
 	release \
 	update-workflows-branches \
 	statify-components \
-	lint-monitoring
+	lint-monitoring \
+	clean