Add auth type for snmpd readonly user

By default, the auth type for the snmpd user is MD5.  This fails on
a FIPS enabled system, resulting in snmpd not starting correctly.
This change provides an option to specify the auth type to something
that is supported ('SHA')

Depends-On: https://review.opendev.org/c/openstack/puppet-tripleo/+/813087
Change-Id: Ie07cb10e1c6b81cff29177fb724feffc69a5dc68

deployment/snmp/snmp-baremetal-puppet.yaml

@@ -29,6 +29,10 @@ parameters:
     description: Mapping of service endpoint -> protocol. Typically set
                  via parameter_defaults in the resource registry.
     type: json
+  SnmpdReadonlyUserAuthType:
+    default: MD5
+    description: The user auth type for SNMPd with readonly rights running on all Overcloud nodes
+    type: string
   SnmpdReadonlyUserName:
     default: ro_snmp_user
     description: The user name for SNMPd with readonly rights running on all Overcloud nodes
@@ -80,6 +84,7 @@ outputs:
                     proto: 'udp'
                     source: <%net_cidr%>
       config_settings:
+        tripleo::profile::base::snmp::snmpd_auth_type: {get_param: SnmpdReadonlyUserAuthType}
         tripleo::profile::base::snmp::snmpd_user: {get_param: SnmpdReadonlyUserName}
         tripleo::profile::base::snmp::snmpd_password: {get_param: SnmpdReadonlyUserPassword}
         snmp::agentaddress: {get_param: SnmpdBindHost}

releasenotes/notes/add-authtype-for-snmp-readonly-user-c90c9e5a12c92893.yaml

@@ -0,0 +1,6 @@
+---
+features:
+   - |
+     Add parameter to set the auth type for the snmpd_user.  Possible options are
+     MD5 (which is what was hardcoded before and is the default now) and SHA.  This
+     should be set to SHA on FIPS environments.