Live migrate does not work due to missing 'nc' executable

[Logan V]

On rocky I am seeing live migration failures due to the 'netcat-openbsd' package not being installed on my Ubuntu hosts.

This error is thrown by nova-compute on the source node:
Jun 21 02:06:20 sourcehost nova-compute[1458140]: 2019-06-21 02:06:20.458 1458140 ERROR nova.virt.libvirt.driver [-] [instance: d1a88f58-04df-4d07-a011-beab9f3e3675] Live Migration failure: operation failed: Failed to connect to remote libvirt URI qemu+ssh://nova@targethost/system?no_verify=1&keyfile=/var/lib/nova/.ssh/id_rsa: End of file while reading data: sh: 1: nc: not found: Input/output error

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/666759

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/666759
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible-os_nova/commit/?id=a01e6d9607702ae2ca9282808193b4b91ea0cce6
Submitter: Zuul
Branch: master

commit a01e6d9607702ae2ca9282808193b4b91ea0cce6
Author: Logan V <email address hidden>
Date: Thu Jun 20 22:16:24 2019 -0500

    Install netcat on compute hosts

    Compute hosts require netcat in order to perform live migrations.

    Closes-Bug: #1833644
    Change-Id: Ie0caab0b10e878722f1804f67808f1d83d504c59

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/stein
Review: https://review.opendev.org/669953

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/rocky
Review: https://review.opendev.org/669954

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/669953
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible-os_nova/commit/?id=99266bd43b59d0d42fbce090487d13625b5a5b57
Submitter: Zuul
Branch: stable/stein

commit 99266bd43b59d0d42fbce090487d13625b5a5b57
Author: Logan V <email address hidden>
Date: Thu Jun 20 22:16:24 2019 -0500

    Install netcat on compute hosts

    Compute hosts require netcat in order to perform live migrations.

    Closes-Bug: #1833644
    Change-Id: Ie0caab0b10e878722f1804f67808f1d83d504c59
    (cherry picked from commit a01e6d9607702ae2ca9282808193b4b91ea0cce6)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/669954
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible-os_nova/commit/?id=6b91473e7b1179d5b91d5d93c4feae6d20b2c67e
Submitter: Zuul
Branch: stable/rocky

commit 6b91473e7b1179d5b91d5d93c4feae6d20b2c67e
Author: Logan V <email address hidden>
Date: Thu Jun 20 22:16:24 2019 -0500

    Install netcat on compute hosts

    Compute hosts require netcat in order to perform live migrations.

    Closes-Bug: #1833644
    Change-Id: Ie0caab0b10e878722f1804f67808f1d83d504c59
    (cherry picked from commit a01e6d9607702ae2ca9282808193b4b91ea0cce6)

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/729413

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/729413
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible-os_nova/commit/?id=1e7f093fee43bd9e46a18d5183a360ffc1c9ac0d
Submitter: Zuul
Branch: master

commit 1e7f093fee43bd9e46a18d5183a360ffc1c9ac0d
Author: Logan V <email address hidden>
Date: Tue May 19 17:18:53 2020 -0500

    Install netcat-openbsd for live migration

    netcat-openbsd is required on Debian/Ubuntu in order for live migration
    to function. If it is not installed, you get an error that looks like:

    libvirt.libvirtError: operation failed: Failed to connect to remote libvirt URI qemu+ssh://nova@hv1/system?no_verify=1&keyfile=/var/lib/nova/.ssh/id_rsa: End of file while reading data:
    sh: 1: nc: not found: Input/output error
    2020-05-19 22:13:32.553 4511 ERROR nova.virt.libvirt.driver [-] [instance: b5a313c0-326c-4e3f-bec4-22926289999f] Migration operation has aborted

    This was originally fixed in [1] and then accidentally reverted in a
    package cleanup[2].

    [1] https://review.opendev.org/#/c/666759/
    [2] https://review.opendev.org/#/c/662585/

    Closes-Bug: #1833644

    Change-Id: Ia2747142e6253b286d36d8c71a263ef7ed01341d

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/ussuri
Review: https://review.opendev.org/737787

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/737787
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible-os_nova/commit/?id=0bd3c221a62462665220ce945372ee2770461ba9
Submitter: Zuul
Branch: stable/ussuri

commit 0bd3c221a62462665220ce945372ee2770461ba9
Author: Logan V <email address hidden>
Date: Tue May 19 17:18:53 2020 -0500

    Install netcat-openbsd for live migration

    netcat-openbsd is required on Debian/Ubuntu in order for live migration
    to function. If it is not installed, you get an error that looks like:

    libvirt.libvirtError: operation failed: Failed to connect to remote libvirt URI qemu+ssh://nova@hv1/system?no_verify=1&keyfile=/var/lib/nova/.ssh/id_rsa: End of file while reading data:
    sh: 1: nc: not found: Input/output error
    2020-05-19 22:13:32.553 4511 ERROR nova.virt.libvirt.driver [-] [instance: b5a313c0-326c-4e3f-bec4-22926289999f] Migration operation has aborted

    This was originally fixed in [1] and then accidentally reverted in a
    package cleanup[2].

    [1] https://review.opendev.org/#/c/666759/
    [2] https://review.opendev.org/#/c/662585/

    Closes-Bug: #1833644

    Change-Id: Ia2747142e6253b286d36d8c71a263ef7ed01341d
    (cherry picked from commit 1e7f093fee43bd9e46a18d5183a360ffc1c9ac0d)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/openstack-ansible-os_nova rocky-eol release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/openstack-ansible-os_nova stein-eol release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/openstack-ansible-os_nova train-eol release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/openstack-ansible-os_nova ussuri-eol release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/openstack-ansible-os_nova yoga-eom release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/openstack-ansible-os_nova victoria-eom release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/openstack-ansible-os_nova wallaby-eom release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/openstack-ansible-os_nova xena-eom release.