Use dedicated range for all files to eanble cloudkitty-dashboard to
avoid conflict with the other plugins or even core files provided by
horizon. 310xx is used by watcher to atm so move it to 320xx .
Change-Id: I2e7cca1bb6ab64072b4967b980e661f4415e5704
Signed-off-by: Takashi Kajinami <kajinamit@oss.nttdata.com>