130efefe6c
We updated other usage of sudo to pass -H when installing pip things, to avoid creating a .cache directory in $STACK_USER's $HOME that is owned by root. get-pip.py also ends up creating a ~/.cache, so we need to update sudo usage there as well. Closes-bug: #1405626 Related-bug: #1405732 Change-Id: If791b9b25d6a4280dab19117004184e57e78d038