Update go dependencies

vendor/github.com/prometheus/common/Makefile

@@ -0,0 +1,26 @@
+# Copyright 2018 The Prometheus Authors
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+include Makefile.common
+
+.PHONY: deps
+deps:
+	@echo ">> getting dependencies"
+	GO111MODULE=$(GO111MODULE) $(GO) get $(GOOPTS) -t ./...
+
+.PHONY: test
+test:: deps check_license unused common-test
+
+ifeq (,$(shell echo $(GO_VERSION_NUMBER) | grep -E 'go1\.(7|8|9)\.'))
+test:: staticcheck
+endif