ANDROID: xt_quota2: set usersize in xt_match registration object

ANDROID: xt_quota2: set usersize in xt_match registration object

Explicitly set what is visible to userspace

Mot-CRs-fixed: (CR)
CVE-Fixed: CVE-2021-0961

Bug: 196046570
Test: passed netd test suites
Signed-off-by: Todd Kjos <tkjos@google.com>
Change-Id: Iacec0ef8ae290e01f1b60508d8abcd40a3653c83
Signed-off-by: Gajjala Chakradhar <gajjalac@motorola.com>
Reviewed-on: https://gerrit.mot.com/2123624
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Xiangpo Zhao <zhaoxp3@motorola.com>
Submit-Approved: Jira Key
(cherry picked from commit ecdb616924dfa15dc1bc9948a08801f20680c714)