Replace SFTP file copying with gzip+stream copying
Replace SFTP file copying with gzip+stream copying

Improves EC2 testing time by cutting down on file transfer time.
Closes #207.

spblightadv/rethinkdb,tempbottle/rethinkdb,Qinusty/rethinkdb,marshall007/rethinkdb,losywee/rethinkdb,victorbriz/rethinkdb,captainpete/rethinkdb,mbroadst/rethinkdb,mquandalle/rethinkdb,nviennot/rethinkdb,matthaywardwebdesign/rethinkdb,Wilbeibi/rethinkdb,dparnell/rethinkdb,victorbriz/rethinkdb,yaolinz/rethinkdb,alash3al/rethinkdb,JackieXie168/rethinkdb,jfriedly/rethinkdb,JackieXie168/rethinkdb,gavioto/rethinkdb,urandu/rethinkdb,catroot/rethinkdb,mcanthony/rethinkdb,robertjpayne/rethinkdb,KSanthanam/rethinkdb,greyhwndz/rethinkdb,eliangidoni/rethinkdb,ayumilong/rethinkdb,KSanthanam/rethinkdb,bchavez/rethinkdb,rrampage/rethinkdb,jesseditson/rethinkdb,jmptrader/rethinkdb,marshall007/rethinkdb,JackieXie168/rethinkdb,sebadiaz/rethinkdb,jmptrader/rethinkdb,alash3al/rethinkdb,JackieXie168/rethinkdb,yaolinz/rethinkdb,losywee/rethinkdb,pap/rethinkdb,mquandalle/rethinkdb,4talesa/rethinkdb,Qinusty/rethinkdb,4talesa/rethinkdb,scripni/rethinkdb,bchavez/rethinkdb,wkennington/rethinkdb,niieani/rethinkdb,nviennot/rethinkdb,captainpete/rethinkdb,eliangidoni/rethinkdb,jfriedly/rethinkdb,gdi2290/rethinkdb,4talesa/rethinkdb,wkennington/rethinkdb,matthaywardwebdesign/rethinkdb,elkingtonmcb/rethinkdb,catroot/rethinkdb,AtnNn/rethinkdb,sontek/rethinkdb,wujf/rethinkdb,spblightadv/rethinkdb,wojons/rethinkdb,dparnell/rethinkdb,rrampage/rethinkdb,bpradipt/rethinkdb,sontek/rethinkdb,rrampage/rethinkdb,sbusso/rethinkdb,robertjpayne/rethinkdb,bpradipt/rethinkdb,ayumilong/rethinkdb,mcanthony/rethinkdb,urandu/rethinkdb,tempbottle/rethinkdb,Qinusty/rethinkdb,marshall007/rethinkdb,AtnNn/rethinkdb,bchavez/rethinkdb,elkingtonmcb/rethinkdb,bchavez/rethinkdb,jfriedly/rethinkdb,ayumilong/rethinkdb,captainpete/rethinkdb,tempbottle/rethinkdb,KSanthanam/rethinkdb,Wilbeibi/rethinkdb,RubenKelevra/rethinkdb,bpradipt/rethinkdb,lenstr/rethinkdb,mcanthony/rethinkdb,Qinusty/rethinkdb,catroot/rethinkdb,JackieXie168/rethinkdb,AntouanK/rethinkdb,grandquista/rethinkdb,KSanthanam/rethinkdb,catroot/rethinkdb,sontek/rethinkdb,jfriedly/rethinkdb,robertjpayne/rethinkdb,alash3al/rethinkdb,lenstr/rethinkdb,AntouanK/rethinkdb,urandu/rethinkdb,yaolinz/rethinkdb,jmptrader/rethinkdb,yaolinz/rethinkdb,nviennot/rethinkdb,wojons/rethinkdb,wkennington/rethinkdb,rrampage/rethinkdb,rrampage/rethinkdb,wujf/rethinkdb,losywee/rethinkdb,mquandalle/rethinkdb,sontek/rethinkdb,scripni/rethinkdb,gdi2290/rethinkdb,ayumilong/rethinkdb,Wilbeibi/rethinkdb,captainpete/rethinkdb,wkennington/rethinkdb,tempbottle/rethinkdb,scripni/rethinkdb,marshall007/rethinkdb,robertjpayne/rethinkdb,greyhwndz/rethinkdb,grandquista/rethinkdb,yakovenkodenis/rethinkdb,4talesa/rethinkdb,matthaywardwebdesign/rethinkdb,4talesa/rethinkdb,matthaywardwebdesign/rethinkdb,wujf/rethinkdb,jmptrader/rethinkdb,Wilbeibi/rethinkdb,urandu/rethinkdb,alash3al/rethinkdb,alash3al/rethinkdb,captainpete/rethinkdb,sbusso/rethinkdb,Qinusty/rethinkdb,JackieXie168/rethinkdb,lenstr/rethinkdb,niieani/rethinkdb,robertjpayne/rethinkdb,grandquista/rethinkdb,mquandalle/rethinkdb,gdi2290/rethinkdb,yaolinz/rethinkdb,jesseditson/rethinkdb,grandquista/rethinkdb,jesseditson/rethinkdb,sebadiaz/rethinkdb,Qinusty/rethinkdb,bpradipt/rethinkdb,ayumilong/rethinkdb,marshall007/rethinkdb,AntouanK/rethinkdb,matthaywardwebdesign/rethinkdb,eliangidoni/rethinkdb,victorbriz/rethinkdb,RubenKelevra/rethinkdb,Wilbeibi/rethinkdb,KSanthanam/rethinkdb,jmptrader/rethinkdb,jesseditson/rethinkdb,yakovenkodenis/rethinkdb,urandu/rethinkdb,sebadiaz/rethinkdb,urandu/rethinkdb,AntouanK/rethinkdb,wkennington/rethinkdb,scripni/rethinkdb,gdi2290/rethinkdb,bpradipt/rethinkdb,wojons/rethinkdb,catroot/rethinkdb,jfriedly/rethinkdb,elkingtonmcb/rethinkdb,marshall007/rethinkdb,bpradipt/rethinkdb,mbroadst/rethinkdb,mquandalle/rethinkdb,mcanthony/rethinkdb,AtnNn/rethinkdb,pap/rethinkdb,sbusso/rethinkdb,losywee/rethinkdb,greyhwndz/rethinkdb,mbroadst/rethinkdb,sbusso/rethinkdb,catroot/rethinkdb,pap/rethinkdb,dparnell/rethinkdb,victorbriz/rethinkdb,ayumilong/rethinkdb,lenstr/rethinkdb,bchavez/rethinkdb,gavioto/rethinkdb,scripni/rethinkdb,yakovenkodenis/rethinkdb,jfriedly/rethinkdb,catroot/rethinkdb,yakovenkodenis/rethinkdb,pap/rethinkdb,pap/rethinkdb,eliangidoni/rethinkdb,elkingtonmcb/rethinkdb,dparnell/rethinkdb,dparnell/rethinkdb,sebadiaz/rethinkdb,sebadiaz/rethinkdb,wkennington/rethinkdb,gavioto/rethinkdb,captainpete/rethinkdb,niieani/rethinkdb,lenstr/rethinkdb,ajose01/rethinkdb,sontek/rethinkdb,Qinusty/rethinkdb,matthaywardwebdesign/rethinkdb,AntouanK/rethinkdb,mcanthony/rethinkdb,ajose01/rethinkdb,greyhwndz/rethinkdb,spblightadv/rethinkdb,captainpete/rethinkdb,wojons/rethinkdb,yakovenkodenis/rethinkdb,4talesa/rethinkdb,AntouanK/rethinkdb,grandquista/rethinkdb,dparnell/rethinkdb,sbusso/rethinkdb,tempbottle/rethinkdb,jmptrader/rethinkdb,scripni/rethinkdb,alash3al/rethinkdb,AtnNn/rethinkdb,jesseditson/rethinkdb,urandu/rethinkdb,mbroadst/rethinkdb,RubenKelevra/rethinkdb,bpradipt/rethinkdb,ajose01/rethinkdb,nviennot/rethinkdb,jesseditson/rethinkdb,ayumilong/rethinkdb,greyhwndz/rethinkdb,mquandalle/rethinkdb,wojons/rethinkdb,grandquista/rethinkdb,grandquista/rethinkdb,marshall007/rethinkdb,gdi2290/rethinkdb,spblightadv/rethinkdb,bchavez/rethinkdb,alash3al/rethinkdb,elkingtonmcb/rethinkdb,Wilbeibi/rethinkdb,eliangidoni/rethinkdb,pap/rethinkdb,eliangidoni/rethinkdb,pap/rethinkdb,wujf/rethinkdb,jmptrader/rethinkdb,wujf/rethinkdb,AntouanK/rethinkdb,spblightadv/rethinkdb,scripni/rethinkdb,gdi2290/rethinkdb,mbroadst/rethinkdb,wujf/rethinkdb,mcanthony/rethinkdb,greyhwndz/rethinkdb,niieani/rethinkdb,grandquista/rethinkdb,dparnell/rethinkdb,dparnell/rethinkdb,robertjpayne/rethinkdb,sontek/rethinkdb,yakovenkodenis/rethinkdb,pap/rethinkdb,niieani/rethinkdb,tempbottle/rethinkdb,robertjpayne/rethinkdb,elkingtonmcb/rethinkdb,nviennot/rethinkdb,robertjpayne/rethinkdb,gavioto/rethinkdb,ajose01/rethinkdb,catroot/rethinkdb,wkennington/rethinkdb,losywee/rethinkdb,niieani/rethinkdb,rrampage/rethinkdb,4talesa/rethinkdb,nviennot/rethinkdb,AtnNn/rethinkdb,AtnNn/rethinkdb,wojons/rethinkdb,RubenKelevra/rethinkdb,niieani/rethinkdb,rrampage/rethinkdb,greyhwndz/rethinkdb,AtnNn/rethinkdb,matthaywardwebdesign/rethinkdb,yaolinz/rethinkdb,bpradipt/rethinkdb,wujf/rethinkdb,gavioto/rethinkdb,yaolinz/rethinkdb,dparnell/rethinkdb,JackieXie168/rethinkdb,gavioto/rethinkdb,Wilbeibi/rethinkdb,victorbriz/rethinkdb,bchavez/rethinkdb,wkennington/rethinkdb,mbroadst/rethinkdb,niieani/rethinkdb,JackieXie168/rethinkdb,nviennot/rethinkdb,victorbriz/rethinkdb,mbroadst/rethinkdb,tempbottle/rethinkdb,Qinusty/rethinkdb,gavioto/rethinkdb,victorbriz/rethinkdb,ajose01/rethinkdb,jesseditson/rethinkdb,jesseditson/rethinkdb,RubenKelevra/rethinkdb,greyhwndz/rethinkdb,losywee/rethinkdb,KSanthanam/rethinkdb,sebadiaz/rethinkdb,Qinusty/rethinkdb,KSanthanam/rethinkdb,marshall007/rethinkdb,elkingtonmcb/rethinkdb,yakovenkodenis/rethinkdb,robertjpayne/rethinkdb,lenstr/rethinkdb,AtnNn/rethinkdb,mquandalle/rethinkdb,grandquista/rethinkdb,Wilbeibi/rethinkdb,gavioto/rethinkdb,nviennot/rethinkdb,eliangidoni/rethinkdb,ajose01/rethinkdb,mbroadst/rethinkdb,mquandalle/rethinkdb,RubenKelevra/rethinkdb,tempbottle/rethinkdb,sbusso/rethinkdb,yaolinz/rethinkdb,sebadiaz/rethinkdb,urandu/rethinkdb,RubenKelevra/rethinkdb,sontek/rethinkdb,RubenKelevra/rethinkdb,bchavez/rethinkdb,eliangidoni/rethinkdb,wojons/rethinkdb,mbroadst/rethinkdb,sbusso/rethinkdb,matthaywardwebdesign/rethinkdb,AntouanK/rethinkdb,eliangidoni/rethinkdb,JackieXie168/rethinkdb,captainpete/rethinkdb,bchavez/rethinkdb,victorbriz/rethinkdb,KSanthanam/rethinkdb,ayumilong/rethinkdb,lenstr/rethinkdb,yakovenkodenis/rethinkdb,ajose01/rethinkdb,rrampage/rethinkdb,gdi2290/rethinkdb,jfriedly/rethinkdb,sbusso/rethinkdb,spblightadv/rethinkdb,losywee/rethinkdb,jmptrader/rethinkdb,spblightadv/rethinkdb,ajose01/rethinkdb,lenstr/rethinkdb,sontek/rethinkdb,wojons/rethinkdb,sebadiaz/rethinkdb,4talesa/rethinkdb,scripni/rethinkdb,spblightadv/rethinkdb,elkingtonmcb/rethinkdb,losywee/rethinkdb,alash3al/rethinkdb,mcanthony/rethinkdb,jfriedly/rethinkdb,mcanthony/rethinkdb,bpradipt/rethinkdb