Fixed missing pkill

Author: ewoutp

test/Dockerfile-arangodb-golang

@@ -10,6 +10,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 		pkg-config \
         wget \
 		ca-certificates \
+		procps \
 	&& rm -rf /var/lib/apt/lists/*
 
 ENV GOLANG_VERSION 1.8.3