Makefile: suggests install.tools

Signed-off-by: Antonio Murdaca <runcom@redhat.com>

.tool/lint

@@ -4,11 +4,6 @@ set -o errexit
 set -o nounset
 set -o pipefail
 
-if [ ! $(command -v gometalinter) ]; then
-	go get -u github.com/alecthomas/gometalinter
-	gometalinter --update --install
-fi
-
 for d in $(find . -type d -not -iwholename '*.git*' -a -not -iname '.tool' -a -not -iwholename '*vendor*'); do
 	gometalinter \
 		--exclude='error return value not checked.*(Close|Log|Print).*\(errcheck\)$' \

Makefile

@@ -22,6 +22,7 @@ help:
 	@echo " * 'lint' - Execute the source code linter"
 
 lint: ${OCID_LINK}
+	@which gometalinter > /dev/null 2>/dev/null || (echo "ERROR: gometalinter not found. Consider 'make install.tools' target" && false)
 	@echo "checking lint"
 	@./.tool/lint