[chromite] Use long-form names for arguments to autotest_rpc_client.
[chromite] Use long-form names for arguments to autotest_rpc_client.

There's a refactor coming up for the autotest_rpc_client so that we can
stop having to restart the golo proxy every time we need to thread
another argument through (as doing so kills all currently running
suites).  As part of this, it'd be nice if we didn't have to handle
short-form vs. long-form arguments.

BUG=None
TEST=unit, trybot (trybot-lumpy-paladin/R31-4637.0.0-b1140)

Change-Id: I6e5c778fc46566aa358a5852ea6c708f975631e4
Reviewed-on: https://chromium-review.googlesource.com/167735
Tested-by: Alex Miller <5ab88b9526fa6d253dcf36fcb815fe89e04f8ae5@chromium.org>
Reviewed-by: David James <f231dc574bbeb62604660cbc162d1b8642a0a3af@chromium.org>
Commit-Queue: Alex Miller <5ab88b9526fa6d253dcf36fcb815fe89e04f8ae5@chromium.org>

chadversary/chromiumos.chromite,bpsinc-native/src_third_party_chromite,bpsinc-native/src_third_party_chromite,chadversary/chromiumos.chromite,bpsinc-native/src_third_party_chromite