Add --no-cache-dir to "pip install" commands to workaround Openshift python-2.7 cartrdige bug (openshift/origin-server#6390)

Author: gwossum-lrs

usr/python/versions/2.7/bin/control

@@ -124,13 +124,13 @@ function tidy() {
 function build_server() {
     case "$OPENSHIFT_PYTHON_SERVER" in
         gevent)
-            pip install gevent
+            pip install --no-cache-dir gevent
             ;;
         gunicorn)
-            pip install gevent gunicorn
+            pip install --no-cache-dir gevent gunicorn
             ;;
 	luigid)
-            pip install luigi
+            pip install --no-cache-dir luigi
 	    ;;
     esac
 
@@ -165,7 +165,7 @@ function build() {
 
     if [ -f ${OPENSHIFT_REPO_DIR}/requirements.txt ]
     then
-        ( cd $OPENSHIFT_REPO_DIR; pip install -r ${OPENSHIFT_REPO_DIR}/requirements.txt $OPENSHIFT_PYTHON_MIRROR )
+        ( cd $OPENSHIFT_REPO_DIR; pip install --no-cache-dir -r ${OPENSHIFT_REPO_DIR}/requirements.txt $OPENSHIFT_PYTHON_MIRROR )
     fi
 
     if [ -f ${OPENSHIFT_REPO_DIR}/setup.py ]

usr/python/versions/3.3/bin/control

@@ -112,11 +112,14 @@ function tidy() {
 function build_server() {
     case "$OPENSHIFT_PYTHON_SERVER" in
         gevent)
-            pip install gevent
+            pip install --no-cache-dir gevent
             ;;
         gunicorn)
-            pip install gevent gunicorn
+            pip install --no-cache-dir gevent gunicorn
             ;;
+	luigi)
+            pip install --no-cache-dir luigi
+	    ;;
     esac
 
     echo $OPENSHIFT_PYTHON_SERVER > env/OPENSHIFT_PYTHON_RUNNING_SERVER
@@ -150,7 +153,7 @@ function build() {
 
     if [ -f ${OPENSHIFT_REPO_DIR}/requirements.txt ]
     then
-        ( cd $OPENSHIFT_REPO_DIR; pip install -r ${OPENSHIFT_REPO_DIR}/requirements.txt $OPENSHIFT_PYTHON_MIRROR )
+        ( cd $OPENSHIFT_REPO_DIR; pip install --no-cache-dir -r ${OPENSHIFT_REPO_DIR}/requirements.txt $OPENSHIFT_PYTHON_MIRROR )
     fi
 
     if [ -f ${OPENSHIFT_REPO_DIR}/setup.py ]