Move uidOwnerMap dump to BpfNetMaps

Before this CL
....
mUidOwnerMap:
10050  IIF_MATCH LOCKDOWN_VPN_MATCH 0
10061  HAPPY_BOX_MATCH
10091  HAPPY_BOX_MATCH IIF_MATCH LOCKDOWN_VPN_MATCH 0
....

After this CL
....
sUidOwnerMap:
  10050 IIF_MATCH LOCKDOWN_VPN_MATCH 0
  10061 HAPPY_BOX_MATCH
  10091 HAPPY_BOX_MATCH IIF_MATCH LOCKDOWN_VPN_MATCH 0
....

Bug: 217624062
Test: dumpsys connectivity trafficcontroller, atest BpfNetMapsTest
Change-Id: I0e2358e462824273a89fcba6e19e75a233f9fe18