Enable cap_net_admin to allow firewall rule tests to run

[alanmcanonical]

Description:

• Enable net_admin to allow firewall rule tests to run

Rationale:

• Before enable that cap, testing xccdf_org.ssgproject.content_rule_set_nftables_table will get error even we ssh into container as root

+ echo 'Remediating rule 1/1: '\''xccdf_org.ssgproject.content_rule_set_nftables_table'\'''
Remediating rule 1/1: 'xccdf_org.ssgproject.content_rule_set_nftables_table'
+ dpkg-query --show '--showformat=${db:Status-Status}' nftables
+ grep -q '^installed$'
+ var_nftables_family=inet
+ var_nftables_table=filter
+ nft list table inet filter
Operation not permitted (you must be root)
netlink: Error: cache initialization failed: Operation not permitted
+ nft create table inet filter
Error: Could not process rule: Operation not permitted
create table inet filter
^^^^^^^^^^^^^^^^^^^^^^^^^

[openshift-ci]

Hi @alanmcanonical. Thanks for your PR.

I'm waiting for a ComplianceAsCode member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

I understand the commands that are listed here.

Details

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