ranger-2.1集成CDH6.3.1

RANGER-2978: Ranger upgrade fails due to missing DB function

Signed-off-by: Madhan Neethiraj <madhan@apache.org>
(cherry picked from commit f754f83)

Ranger 2.1.0-rc0

Ranger 2.0.0 release

RANGER-2520 : Prevent Roles to be saved in Ranger Role Management pag…

…e when user or groups are not added to the role.

(cherry picked from commit 716591d)

Ranger 1.2.0 release

Ranger 1.2.0 RC1

Ranger 1.1.0 Final Release

Ranger 1.1.0 RC1

Ranger 1.1.0 RC2