Configure SNMPD on undercloud also for older releases

[Martin Mágr]

We need to have SNMPD configured for all releases down to queens, so that Ceilometer is able to gather HW metrics for Gnocchi. We will basically need to backport [1] down to rocky and then move the feature to instack-undercloud for queens.

[1] https://review.opendev.org/#/c/656760/5

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/731572
Committed: https://git.openstack.org/cgit/openstack/tripleo-heat-templates/commit/?id=3b0aa5da1b3e93807b3a489db60b8452aa47703e
Submitter: Zuul
Branch: stable/train

commit 3b0aa5da1b3e93807b3a489db60b8452aa47703e
Author: Martin Magr <email address hidden>
Date: Thu May 2 12:54:13 2019 +0200

    Configure SNMP on undercloud

    Transfering to containerized deployment of undercloud we lost automated
    configuration of SNMP for undercloud. Telemetry stack is now failing to
    HW monitor this node.

    Partial-Bug: #1881152

    Change-Id: I219e2a8a08bc9b47bd7110fadcb188ef703acfce
    (cherry picked from commit 897678b33f5414b137c1a399934c4721e46662d0)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/731529
Committed: https://git.openstack.org/cgit/openstack/instack-undercloud/commit/?id=a728f945ffe4cf512a0d00c8ae744f408f5d1632
Submitter: Zuul
Branch: stable/queens

commit a728f945ffe4cf512a0d00c8ae744f408f5d1632
Author: Martin Magr <email address hidden>
Date: Thu May 28 14:45:34 2020 +0200

    Configure SNMPD when telemetry is used

    Users reported regression of missing SNMPD service. I wasn't able to find where got
    it lost, so made this patch to explicitly configure the service as it is configured
    on newer releases.

    Depends-On: https://review.opendev.org/#/c/732091
    Change-Id: I35bbd300a63e05added1aa4dda38d12d0657c704
    Partial-Bug: #1881152