Fix permission issues for network update service

Fix permission issues for network update service command-line commands
used in tests.

Bug: 251726675
Test: atest android.os.cts.SystemClockSntpTest
Merged-In: I8a34c801d82c769fd8d06e5b0b3177ce92b5f072
Change-Id: I8a34c801d82c769fd8d06e5b0b3177ce92b5f072
1 file changed