Typo corrections in run_tests.sh  comments

Change-Id: I7d247bada06b38884970c1187a51357ab76a8952
Documented Flavor Sorting Options

Documented with examples to add a sorting mechanisms to hardware template flavors.

Change-Id: Ic42b4f7b9e1fe8a59aaa548bd2883e6eef450e98
Partial-Bug: #1221115
Merge "Typo corrections in run_tests.sh  comments"