standardize input for case statement in legacy request method
standardize input for case statement in legacy request method

twilio/twilio-ruby,dddaisuke/twilio-ruby,mypizza/twilio-ruby-private,jarodreyes/twilio-ruby,MadBomber/twilio-ruby,ShanaLMoore/Magic-8-text,philnash/twilio-ruby,xeron/twilio-ruby,dattyle/twilio-ruby,eloyesp/twilio-ruby,sai43/twilio-ruby,imranraja85/twilio-ruby,hzchirs/twilio-ruby,ashleydonohoe/twilio-ruby