Kh add rule for container escape

[Kaizhe]

What type of PR is this?

Uncomment one (or more) /kind <> lines:

/kind bug

/kind cleanup

/kind design

/kind documentation

/kind failing-test

/kind feature

If contributing rules or changes to rules, please make sure to also uncomment one of the following line:

/kind rule-update

/kind rule-create

Any specific area of the project related to this PR?

Uncomment one (or more) /area <> lines:

/area build

/area engine

/area rules

/area tests

/area proposals

What this PR does / why we need it:

1. Add rules Debugfs Launched in Privileged Container and Mount Launched in Privileged Container to detect container escape activities inside privileged containers.
2. Add k3s-agent in the whitelist in rule Set Setuid or Setgid bit to reduce FP.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

https://man7.org/linux/man-pages/man8/mount.8.html

https://man7.org/linux/man-pages/man8/debugfs.8.html

Does this PR introduce a user-facing change?:

rule(Debugfs Launched in Privileged Container): new rule
rule(Mount Launched in Privileged Container): new rule
rule(Set Setuid or Setgid bit): add k3s-agent in the whitelist

[leodido]

LGTM

[poiana]

LGTM label has been added.

Git tree hash: e0fa5bf49bf9b0f9bd3e28934ad8debd6559bea8

[leogr]

LGTM

/milestone 0.28.0

[poiana]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: leodido, leogr

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• rules/OWNERS [leodido,leogr]

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