Updated compile docker images to include tree package

docker/compile/Dockerfile.centos7

@@ -42,6 +42,7 @@ RUN yum -y install \
       unzip \
       wget \
       which \
+      tree \
       java-1.8.0-openjdk \
       java-1.8.0-openjdk-devel
 

docker/compile/Dockerfile.debian9

@@ -34,6 +34,7 @@ RUN apt-get update && apt-get -y install \
       python2.7-dev \
       software-properties-common \
       python-setuptools \
+      tree \
       zip \
       unzip \
       wget

docker/compile/Dockerfile.ubuntu14.04

@@ -41,6 +41,7 @@ RUN apt-get update && apt-get -y install \
       unzip \
       wget \
       cmake \
+      tree \
       openjdk-8-jdk-headless
 
 ENV JAVA_HOME /usr/lib/jvm/java-8-openjdk-amd64

docker/compile/Dockerfile.ubuntu16.04

@@ -36,6 +36,7 @@ RUN apt-get update && apt-get -y install \
       python-software-properties \
       software-properties-common \
       python-setuptools \
+      tree \
       zip \
       unzip \
       wget

docker/compile/Dockerfile.ubuntu18.04

@@ -35,6 +35,7 @@ RUN apt-get update && apt-get -y install \
       unzip \
       git \
       curl \
+      tree \
       openjdk-8-jdk-headless
 
 ENV JAVA_HOME /usr/lib/jvm/java-8-openjdk-amd64