SNMP Default Contact addition to configDB

[praveen-ramamoorthi]

Why I did it

SNMP Default contact value is added as sysContact Azure Cloud Switch vteam <linuxnetdev@microsoft.com> in snmpd.conf during container bringup , but not updated in configDB . This creates a discrepancy between snmpget and show runningconfiguration snmp output. Hence added common default SNMP contact value.

How I did it

Added the default SNMP Contact value in snmp.yml and parsed it via snmp_yml_to_configdb.py to add it to configDB

How to verify it

Check show runningconfiguration snmp , snmpget and /etc/snmp/snmpd.conf in snmp container for default values

admin@sonic:~$ show runningconfiguration snmp
Location
----------
public


SNMP_CONTACT    SNMP_CONTACT_EMAIL
--------------  -------------------------------
SONiC-team      <sonicproject@googlegroups.com>


Community String    Community Type
------------------  ----------------
public              RO


User    Permission Type    Type    Auth Type    Auth Password    Encryption Type    Encryption Password
------  -----------------  ------  -----------  ---------------  -----------------  ---------------------
admin@sonic:~$

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

• 201811
• 201911
• 202006
• 202012
• 202106
• 202111
• 202205
• 202211

Description for the changelog

SNMP Default Contact addition to configDB via snmp.yml

Link to config_db schema for YANG module changes

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