snmp: 5856: fix service removal error

[c-po]

Change Summary

When deleting SNMP from CLI the 'delete' key was not honored in the config dictionary, leading to a false process startup causing the following error:

Job for snmpd.service failed because the control process exited with error code. See "systemctl status snmpd.service" and "journalctl -xeu snmpd.service" for details.

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/5856

Related PR(s)

Component(s) name

Proposed changes

How to test

Smoketest result

cpo@LR1.wue3:~$ /usr/libexec/vyos/tests/smoke/cli/test_service_snmp.py
test_snmp_basic (__main__.TestSNMPService.test_snmp_basic) ... ok
test_snmpv3_md5 (__main__.TestSNMPService.test_snmpv3_md5) ... ok
test_snmpv3_sha (__main__.TestSNMPService.test_snmpv3_sha) ... ok

----------------------------------------------------------------------
Ran 3 tests in 25.045s

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

[c-po]

@Mergifyio backport sagitta

[mergify]

backport sagitta

✅ Backports have been created

• #2684 snmp: 5856: fix service removal error (backport #2683) has been created for branch sagitta