Add config file and command line options.
Add config file and command line options.

  * Add at the server startup config file and command line
    options parsing. Command line options have higher priority.
  * Changes are necessary to provide custom master key and to activate
    or de-activate debug options.

Change-Id: I491ee878e9223d8c3fdac1ec144ff83c800b8d70

joyxu/kernelci-backend,joyxu/kernelci-backend,kernelci/kernelci-backend,joyxu/kernelci-backend,kernelci/kernelci-backend