If the factory was obtained by calling getInsecure(), calls to
createSocket() should skip hostname verification (along with all of the
other skipped safety checks.)
This change slightly relaxes the too-strict checking that was introduced
in change 7fc93c36ae235115727296780dbc35101622bbd4.
Bug: 2834174
Change-Id: Iab7ef861ad0ca727f82ee8cdb78b89b9e835740d