Install: Adding RedHat 7.2 Installation bash scripts

Install: Adding RedHat 7.2 Installation bash scripts

Adding in prepare_python_env.sh and build_base_machine.sh
scripts to appropriate systems folder for installation on
Red Hat 7.2. Modified installation.rst to reflect these
changes.

* Fixed Header to add Red Hat
* Added myself as contributor

JIRA: VSPERF-214

Change-Id: I23a10316e77c3cec67b7f25176e8707de683af09
Signed-off-by: Christian Trautman <ctrautma@redhat.com>
Reviewed-by: Al Morton <acmorton@att.com>
Reviewed-by: Maryam Tahhan <maryam.tahhan@intel.com>