Merge pull request #2231 from xiangjf/master

Installation Script: Fix configuration version bug and update to make use of the latest pip's cache feature

AUTHORS

@@ -45,3 +45,4 @@ Jonathan Peter <jonathan.peter@blue-planet-life.org>
 Kevin Falcone <kevin@edx.org>
 Max Rothman <max@edx.org>
 Andy Armstrong <andya@edx.org>
+Xiang Junfu <xiangjf.fnst@cn.fujitsu.com>

util/install/sandbox.sh

@@ -27,7 +27,7 @@ sudo apt-get upgrade -y
 ##
 sudo apt-get install -y build-essential software-properties-common python-software-properties curl git-core libxml2-dev libxslt1-dev python-pip python-apt python-dev
 sudo pip install --upgrade pip
-sudo pip install --upgrade virtualenv
+sudo -H pip install --upgrade virtualenv
 
 ## Did we specify an openedx release?
 if [ -n "$OPENEDX_RELEASE" ]; then
@@ -35,6 +35,7 @@ if [ -n "$OPENEDX_RELEASE" ]; then
     -e certs_version=$OPENEDX_RELEASE \
     -e forum_version=$OPENEDX_RELEASE \
     -e xqueue_version=$OPENEDX_RELEASE \
+    -e configuration_version=$OPENEDX_RELEASE \
   "
   CONFIG_VER=$OPENEDX_RELEASE
 else
@@ -53,7 +54,7 @@ git checkout $CONFIG_VER
 ## Install the ansible requirements
 ##
 cd /var/tmp/configuration
-sudo pip install -r requirements.txt
+sudo -H pip install -r requirements.txt
 
 ##
 ## Run the edx_sandbox.yml playbook in the configuration/playbooks directory