build: update Makefile to properly execute tests

Signed-off-by: Mark Sagi-Kazar <[email protected]>

Author: sagikazarmark

Makefile

@@ -16,7 +16,7 @@ vet:
 	go vet ./...
 
 test-integration:
-	go test -integration -v ./...
+	cd tests && go test -integration -v ./...
 
 bin/licensei: bin/licensei-${LICENSEI_VERSION}
 	@ln -sf licensei-${LICENSEI_VERSION} bin/licensei