fix issue caused by HDDS-1619.

Author: bharatviswa504

hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/ratis/utils/OzoneManagerRatisUtils.java

@@ -143,14 +143,14 @@ private static OMClientRequest getOMAclRequest(OMRequest omRequest) {
         return new OMBucketAddAclRequest(omRequest);
       }
     } else if (Type.RemoveAcl == cmdType) {
-      ObjectType type = omRequest.getAddAclRequest().getObj().getResType();
+      ObjectType type = omRequest.getRemoveAclRequest().getObj().getResType();
       if (ObjectType.VOLUME == type) {
         return new OMVolumeRemoveAclRequest(omRequest);
       } else if (ObjectType.BUCKET == type) {
         return new OMBucketSetAclRequest(omRequest);
       }
     } else if (Type.SetAcl == cmdType) {
-      ObjectType type = omRequest.getAddAclRequest().getObj().getResType();
+      ObjectType type = omRequest.getSetAclRequest().getObj().getResType();
       if (ObjectType.VOLUME == type) {
         return new OMVolumeSetAclRequest(omRequest);
       } else if (ObjectType.BUCKET == type) {