fix: Degrade process permission for powermgr

Signed-off-by: Nzhaoruiyuan <zhaoruiyuan2@huawei.com>

services/etc/group

@@ -67,6 +67,9 @@ faceauth_host:x:3049:
 pinauth_host:x:3050:
 dms:x:5522:
 update:x:6666:
+charger:x:6667:
+battery_stats:x:6668:
+thermal:x:6669:
 sensor:x:6688:
 input:x:6696:
 msdp:x:6699:

services/etc/passwd

@@ -68,6 +68,9 @@ pinauth_host:x:3050:3050:::/bin/false
 dms:x:5522:5522:::/bin/false
 dbms:x:6000:6000:::/bin/false
 update:x:6666:6666:::/bin/false
+charger:x:6667:6667:::/bin/false
+battery_stats:x:6668:6668:::/bin/false
+thermal:x:6669:6669:::/bin/false
 sensor:x:6688:6688:::/bin/false
 input:x:6696:6696:::/bin/false
 msdp:x:6699:6699:::/bin/false