Errors from PSI are now logged to the lh_data table.
Errors from PSI are now logged to the lh_data table.

This change is to allow users to track pages that are returning
anything other than 200. It also lets them better see if PSI is
returning other errors that cause their tests to fail.

Change-Id: Ifcf1a117fffa018aa2ca02b570f243a98c369b67

google/speed-opportunity-finder,google/speed-opportunity-finder,google/speed-opportunity-finder