[202311][SNMP] Fix config template issue when setting snmpagentaddress

[brholmes1]

Related to PR#16187
Cherry-pick PR#20152

Why I did it

When you configure an SNMP agent address with a VRF, the snmpd service will fail to properly start after the configuration has been applied. The snmpd service shows a status of "FATAL."

sudo config snmpagentaddress add 1.1.1.1 -p 161 -v mgmt

docker exec -it snmp supervisorctl status | awk '{print $1, $2}'
dependent-startup RUNNING
rsyslogd RUNNING
snmp-subagent STOPPED
snmpd FATAL
start EXITED
supervisor-proc-exit-listener RUNNING

Work item tracking

• Microsoft ADO (number only):

How I did it

Corrected syntax in the jinja template used to generate the snmpd.conf within the SNMP docker container.

How to verify it

sudo config snmpagentaddress add 1.1.1.1 -p 161 -v mgmt

docker exec -it snmp supervisorctl status | awk '{print $1, $2}'
dependent-startup EXITED
rsyslogd RUNNING
snmp-subagent RUNNING
snmpd RUNNING
start EXITED
supervisor-proc-exit-listener RUNNING

Which release branch to backport (provide reason below if selected)

• 201811
• 201911
• 202006
• 202012
• 202106
• 202111
• 202205
• 202211
• 202305
• 202311
• 202405

Tested branch (Please provide the tested image version)

• SONiC.master.634739-2ff111cb9
• SONiC.202405.565256-4d6d808b8
• SONiC-OS-202311.634628-3cc3e1a11

Description for the changelog

Link to config_db schema for YANG module changes

A picture of a cute animal (not mandatory but encouraged)

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: brholmes1 (5ad1b81)

[brholmes1]

@qiluo-msft Can you please help review? Thanks!