New benchmark targets for Apache HTTP Client and URLConnection.

OkHttp [HTTP_11]
bodyByteCount=1048576 headerCount=20 threadCount=10
Requests per second: 690.9

UrlConnection [HTTP_11]
bodyByteCount=1048576 headerCount=20 threadCount=10
Requests per second: 671.3

ApacheHttpClient [HTTP_11]
bodyByteCount=1048576 headerCount=20 threadCount=10
Requests per second: 317.4
Merge pull request #500 from square/jwilson_0130_mo_benchmarks

New benchmark targets for Apache HTTP Client and URLConnection.