Added CallServod to support XMLRPC calls.

Change-Id: I3e8d208066bbdd59751854e1e30131d52f3c4788
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/3371987
Auto-Submit: Deniz Kara <denizkara@google.com>
Reviewed-by: Jaques Clapauch <jaquesc@google.com>
Tested-by: Deniz Kara <denizkara@google.com>
Commit-Queue: Deniz Kara <denizkara@google.com>
13 files changed