Fix python 3.3 compatibility in moto/swf regarging string types detection
Fix python 3.3 compatibility in moto/swf regarging string types detection

botify-labs/moto,kefo/moto,okomestudio/moto,gjtempleton/moto,dbfr3qs/moto,gjtempleton/moto,william-richard/moto,braintreeps/moto,ZuluPro/moto,Brett55/moto,dbfr3qs/moto,spulec/moto,whummer/moto,dbfr3qs/moto,im-auld/moto,heddle317/moto,heddle317/moto,botify-labs/moto,whummer/moto,Affirm/moto,botify-labs/moto,spulec/moto,mrucci/moto,okomestudio/moto,dbfr3qs/moto,botify-labs/moto,gjtempleton/moto,spulec/moto,Brett55/moto,spulec/moto,william-richard/moto,heddle317/moto,Brett55/moto,EarthmanT/moto,rocky4570/moto,gjtempleton/moto,IlyaSukhanov/moto,ZuluPro/moto,heddle317/moto,Affirm/moto,kefo/moto,heddle317/moto,botify-labs/moto,rocky4570/moto,rocky4570/moto,rocky4570/moto,2rs2ts/moto,behanceops/moto,Affirm/moto,ZuluPro/moto,kefo/moto,zonk1024/moto,william-richard/moto,whummer/moto,whummer/moto,okomestudio/moto,dbfr3qs/moto,whummer/moto,kefo/moto,Affirm/moto,tootedom/moto,gjtempleton/moto,dbfr3qs/moto,Affirm/moto,whummer/moto,Brett55/moto,rocky4570/moto,okomestudio/moto,ZuluPro/moto,2rs2ts/moto,2rs2ts/moto,okomestudio/moto,2rs2ts/moto,silveregg/moto,ZuluPro/moto,okomestudio/moto,spulec/moto,Brett55/moto,riccardomc/moto,william-richard/moto,spulec/moto,2rs2ts/moto,william-richard/moto,botify-labs/moto,ZuluPro/moto,rocky4570/moto,william-richard/moto,kefo/moto,Brett55/moto,Affirm/moto