That looks like Counterstrike CSST, at least from here. http://www.omegaflexcorp.com/Products/TracPipe_CounterStrike/
The yellow jacketed CSST was the problematic stuff, although I personally don’t like any of it and prefer black iron.
In my area the gas pipe should be bonded downstream of the gas meter to either the “electrical system” ground rod or back to the panel. http://csstsafety.com/Images/CSST-Direct-Bonding-Tech-Bulletin.pdf