A few misc fixes to the rpm server.

* Add #!/usr/bin/python and +x to scripts that should be executable
* Modify rpm_config.ini to set frontend_addr to 0.0.0.0
* Update dns_zone to be cros.corp.google.com
* Automatically create the logging dir if it doesn't exist
* Print usage if any arguments are specified on the cmdline.

TEST=unittests and local runs
BUG=chromium-os:34662,chromium-os:32525,chromium-os:32698
STATUS=Fixed

Change-Id: I88fa52c5e76e6dd589c6d91deb4af373c9262dc1
Reviewed-on: https://gerrit.chromium.org/gerrit/33792
Commit-Ready: Scott Zawalski <scottz@chromium.org>
Reviewed-by: Scott Zawalski <scottz@chromium.org>
Tested-by: Scott Zawalski <scottz@chromium.org>
7 files changed