Update get-pip URL to the new location

The pypa team has made a new static location for get-pip.py. Instead
of downloading from github, we should use this.

Change-Id: Ifb7f00447d4a19f20f6413fa7fece5913de092f8

install_puppet.sh

@@ -17,7 +17,7 @@
 # under the License.
 
 # Install pip using get-pip
-PIP_GET_PIP_URL=https://raw.githubusercontent.com/pypa/pip/master/contrib/get-pip.py
+PIP_GET_PIP_URL=https://bootstrap.pypa.io/get-pip.py
 
 curl -O $PIP_GET_PIP_URL || wget $PIP_GET_PIP_URL
 python get-pip.py

modules/openstack_project/files/nodepool/scripts/cache_devstack.py

@@ -157,9 +157,7 @@ def main():
 
     # cache get-pip, because upstream network connection fails more
     # often than you might imagine.
-    download(
-        'https://raw.githubusercontent.com/pypa/pip/master/contrib/get-pip.py',
-        'get-pip.py')
+    download('https://bootstrap.pypa.io/get-pip.py', 'get-pip.py')
 
 
 if __name__ == '__main__':

modules/openstack_project/files/nodepool/scripts/fix_pip.sh

@@ -23,7 +23,7 @@ for p in python-pip python3-pip ; do
 done
 
 # install pip using get-pip
-PIP_GET_PIP_URL=https://raw.githubusercontent.com/pypa/pip/master/contrib/get-pip.py
+PIP_GET_PIP_URL=https://bootstrap.pypa.io/get-pip.py
 if [ ! -f get-pip.py ] ; then
   curl -O $PIP_GET_PIP_URL || wget $PIP_GET_PIP_URL
 fi