conntrack: T6147: Enable conntrack when firewall state-policy is defined (backport #3159)

[mergify]

Change Summary

• Enable conntrack when firewall state-policy is defined
• Move global state-policy smoketest to it's own test, verify conntrack

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, renaming)
• Refactoring (no functional changes)
• Migration from an old Vyatta component to vyos-1x, please link to related PR inside obsoleted component
• Other (please describe):

Related Task(s)

• https://vyos.dev/T6147

Related PR(s)

Component(s) name

firewall

Proposed changes

How to test

See task

Smoketest result

DEBUG - Running Testcase: /usr/libexec/vyos/tests/smoke/cli/test_firewall.py
DEBUG - test_bridge_basic_rules (__main__.TestFirewall.test_bridge_basic_rules) ... ok
DEBUG - test_flow_offload (__main__.TestFirewall.test_flow_offload) ... ok
DEBUG - test_geoip (__main__.TestFirewall.test_geoip) ... ok
DEBUG - test_groups (__main__.TestFirewall.test_groups) ... ok
DEBUG - test_ipv4_advanced (__main__.TestFirewall.test_ipv4_advanced) ... ok
DEBUG - test_ipv4_basic_rules (__main__.TestFirewall.test_ipv4_basic_rules) ... ok
DEBUG - test_ipv4_dynamic_groups (__main__.TestFirewall.test_ipv4_dynamic_groups) ... ok
DEBUG - test_ipv4_global_state (__main__.TestFirewall.test_ipv4_global_state) ... ok
DEBUG - test_ipv4_mask (__main__.TestFirewall.test_ipv4_mask) ... ok
DEBUG - test_ipv4_state_and_status_rules (__main__.TestFirewall.test_ipv4_state_and_status_rules) ... ok
DEBUG - test_ipv4_synproxy (__main__.TestFirewall.test_ipv4_synproxy) ... ok
DEBUG - test_ipv6_advanced (__main__.TestFirewall.test_ipv6_advanced) ... ok
DEBUG - test_ipv6_basic_rules (__main__.TestFirewall.test_ipv6_basic_rules) ... ok
DEBUG - test_ipv6_dynamic_groups (__main__.TestFirewall.test_ipv6_dynamic_groups) ... ok
DEBUG - test_ipv6_mask (__main__.TestFirewall.test_ipv6_mask) ... ok
DEBUG - test_nested_groups (__main__.TestFirewall.test_nested_groups) ... ok
DEBUG - test_source_validation (__main__.TestFirewall.test_source_validation) ... ok
DEBUG - test_sysfs (__main__.TestFirewall.test_sysfs) ... ok
DEBUG - test_zone_basic (__main__.TestFirewall.test_zone_basic) ... ok
DEBUG - test_zone_flow_offload (__main__.TestFirewall.test_zone_flow_offload) ... ok
DEBUG -
DEBUG - ----------------------------------------------------------------------
DEBUG - Ran 20 tests in 195.730s
DEBUG -
DEBUG - OK

Checklist:

• I have read the CONTRIBUTING document
• I have linked this PR to one or more Phabricator Task(s)
• I have run the components SMOKETESTS if applicable
• My commit headlines contain a valid Task id
• My change requires a change to the documentation
• I have updated the documentation accordingly

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This is an automatic backport of pull request #3159 done by [Mergify](https://mergify.com).