Add bashate verification and fix shell errors

Add bashate verification and fix shell errors

This patch is to add bashate verification. The verification ignores line
too line error. To ensure the test pass, I also fix the shell errors
reported by bashate:
1. delete line ending spaces
2. avoid 'do' in a single line
3. ensure indent is multiple of 4
4. fix function declare
...

Change-Id: Id7112f898a9c56048801455696d32266d9deb19f
Signed-off-by: chengli3 <cheng1.li@intel.com>