Speed up failing InternalClient requests

InternalClient.make_request was sleeping after every attempt,
including the last one. We don't need to sleep after the final
attempt; we can just return failure.

Change-Id: Ieee5f96afb5b39a659d8438a237bfd907405165a
Functional tests for tempurl

Change-Id: I578be387fe6119a86a8abc544b3cbe210ddca3c1
Fixed mispelling in function name - accross to across

Change-Id: I7d9749218d277c9e71e47d903b3126f9f73ffe65
copy over swift.authorize stuff into subrequests

If auth is setup in the env then it needs to be copied over with the
make_request wsgi helper.  Also renamed make_request to
make_subrequest- when I grepped for make_request I got > 250 results,
this'll make it easier to find references to this function in the
future.

Updated docs and sample confs to show tempurl needs to be before dlo and
slo as well as auth.

Change-Id: I9750555727f520a7c9fedd5f4fd31ff0f63d8088
Merge "Fixed mispelling in function name - accross to across"
Merge "Speed up failing InternalClient requests"
Merge "copy over swift.authorize stuff into subrequests"