fix(cassandra) allow overriding consistency level
fix(cassandra) allow overriding consistency level

Fix #1314

jebenexer/kong,li-wl/kong,salazar/kong,Kong/kong,Mashape/kong,Vermeille/kong,icyxp/kong,Kong/kong,akh00/kong,shiprabehera/kong,ccyphers/kong,jerizm/kong,beauli/kong,Kong/kong