Patch easybuild installation fix

fix EasyBuild installation problem, Dont run easybuild bootstrap as root, by making use of -b option of ansible command.

Lots of discussion around the in-ability of the stock Python2.7 on centos7 to support the Easybuild bootstrap due to the outdated setuptools (0.9.8) that is in stock.

The work around for now is to upgrade the system setuptools with sudo pip install -U setuptools.

The long term solution is a python env that directly supports EB. It looks like scl python 2.7 could work for in both dev and prod. This would still need the pip-based setuptools update and adjustsments to ansible to activate the scl. Further discussion is needed.

merged

mentioned in commit de6527d2