install autoconf+automake on macOS

Author: Vladimir Kotal

dev/before_install

@@ -50,7 +50,7 @@ elif [[ "$TRAVIS_OS_NAME" == "osx" || "$RUNNER_OS" == "macOS" ]]; then
 #	brew update
         export HOMEBREW_NO_AUTO_UPDATE=1
 
-	brew install cvs libgit2 jq
+	brew install cvs libgit2 jq autoconf automake
 	if [[ $? != 0 ]]; then
 		echo "cannot install extra packages"
 		exit 1