feat(client): add support to set SO_NODELAY on client HTTP sockets
feat(client): add support to set SO_NODELAY on client HTTP sockets

Add configuration on `HttpConnector` to set `SO_NODELAY` on client
HTTP sockets.

Closes #1473

hyperium/hyper,tshepang/hyper,yazaddaruvala/hyper,hyperium/hyper,tshepang/hyper,yazaddaruvala/hyper,tshepang/hyper,hyperium/hyper