Cleanup of connection_http. Added absolute_import.
Cleanup of connection_http. Added absolute_import.

HackLinux/pyes,aparo/pyes,jayzeng/pyes,mavarick/pyes,haiwen/pyes,HackLinux/pyes,haiwen/pyes,jayzeng/pyes,rookdev/pyes,mavarick/pyes,rookdev/pyes,mouadino/pyes,aparo/pyes,mouadino/pyes,Fiedzia/pyes,HackLinux/pyes,Fiedzia/pyes,jayzeng/pyes,mavarick/pyes,Fiedzia/pyes,haiwen/pyes,aparo/pyes