inspector: Missing new line in dnsmasq.conf when dnsmasq_ip_subnets is used

[Takashi Kajinami]

While adding strict ^ and $ check in unit tests, it turned out that dnsmasq.conf is rendered wrongly when dnsmasq_ip_subnets is used.

```
port=0
interface=br-ctlplane

dhcp-range=192.168.0.100,192.168.0.120,10m
dhcp-option-force=option:mtu,1350
dhcp-range=set:subnet1,192.168.1.100,192.168.1.200,255.255.255.0,10m
dhcp-option=tag:subnet1,option:router,192.168.1.254
dhcp-option-force=tag:subnet1,option:mtu,1350
dhcp-range=set:subnet2,192.168.2.100,192.168.2.200,255.255.255.0,10m
dhcp-option=tag:subnet2,option:router,192.168.2.254
dhcp-option=tag:subnet2,option:classless-static-route,1.2.3.0/24,192.168.2.1,4.5.6.0/24,192.168.2.1dhcp-range=set:subnet3,2001:4888:a03:313a:c0:fe0:0:c200,2001:4888:a03:313a:c0:fe0:0:c2ff,64,10m
dhcp-boot=pxelinux.0,localhost.localdomain,192.168.0.1
dhcp-sequential-ip
```

A line break should be added btween 192.168.2.1 and dhcp-range.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/puppet-ironic/+/899910
Committed: https://opendev.org/openstack/puppet-ironic/commit/e1a89eb585aedcaba57fcfde1585162d37a6c1ba
Submitter: "Zuul (22348)"
Branch: master

commit e1a89eb585aedcaba57fcfde1585162d37a6c1ba
Author: Takashi Kajinami <email address hidden>
Date: Thu Nov 2 13:24:58 2023 +0900

    inspector: Fix missing new line in dnsmasq.conf with multiple subnets

    ... and make pattern match for inspector dnsmasq.conf more
    strict to detect missing new lines or unnecessary elements.

    Closes-Bug: #2042526
    Change-Id: I03abeb7c1519f5a2cbcddaa3722d4053eab3566f

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/2023.2
Review: https://review.opendev.org/c/openstack/puppet-ironic/+/899834

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/puppet-ironic/+/899834
Committed: https://opendev.org/openstack/puppet-ironic/commit/5d73c1aa1c02d42380735dc548e52a5a030e2fdf
Submitter: "Zuul (22348)"
Branch: stable/2023.2

commit 5d73c1aa1c02d42380735dc548e52a5a030e2fdf
Author: Takashi Kajinami <email address hidden>
Date: Thu Nov 2 13:24:58 2023 +0900

    inspector: Fix missing new line in dnsmasq.conf with multiple subnets

    ... and make pattern match for inspector dnsmasq.conf more
    strict to detect missing new lines or unnecessary elements.

    Closes-Bug: #2042526
    Change-Id: I03abeb7c1519f5a2cbcddaa3722d4053eab3566f
    (cherry picked from commit e1a89eb585aedcaba57fcfde1585162d37a6c1ba)

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/2023.1
Review: https://review.opendev.org/c/openstack/puppet-ironic/+/900182

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/puppet-ironic/+/900182
Committed: https://opendev.org/openstack/puppet-ironic/commit/c968ac85a0895c82411224ade3d0597722e81639
Submitter: "Zuul (22348)"
Branch: stable/2023.1

commit c968ac85a0895c82411224ade3d0597722e81639
Author: Takashi Kajinami <email address hidden>
Date: Thu Nov 2 13:24:58 2023 +0900

    inspector: Fix missing new line in dnsmasq.conf with multiple subnets

    ... and make pattern match for inspector dnsmasq.conf more
    strict to detect missing new lines or unnecessary elements.

    Closes-Bug: #2042526
    Change-Id: I03abeb7c1519f5a2cbcddaa3722d4053eab3566f
    (cherry picked from commit e1a89eb585aedcaba57fcfde1585162d37a6c1ba)
    (cherry picked from commit 5d73c1aa1c02d42380735dc548e52a5a030e2fdf)

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/zed
Review: https://review.opendev.org/c/openstack/puppet-ironic/+/900319

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/puppet-ironic/+/900319
Committed: https://opendev.org/openstack/puppet-ironic/commit/e5dc24d158e739ddec0372a54b97ce9fb8160ca6
Submitter: "Zuul (22348)"
Branch: stable/zed

commit e5dc24d158e739ddec0372a54b97ce9fb8160ca6
Author: Takashi Kajinami <email address hidden>
Date: Thu Nov 2 13:24:58 2023 +0900

    inspector: Fix missing new line in dnsmasq.conf with multiple subnets

    ... and make pattern match for inspector dnsmasq.conf more
    strict to detect missing new lines or unnecessary elements.

    Closes-Bug: #2042526
    Change-Id: I03abeb7c1519f5a2cbcddaa3722d4053eab3566f
    (cherry picked from commit e1a89eb585aedcaba57fcfde1585162d37a6c1ba)
    (cherry picked from commit 5d73c1aa1c02d42380735dc548e52a5a030e2fdf)
    (cherry picked from commit c968ac85a0895c82411224ade3d0597722e81639)

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/yoga
Review: https://review.opendev.org/c/openstack/puppet-ironic/+/901844

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/puppet-ironic/+/901844
Committed: https://opendev.org/openstack/puppet-ironic/commit/f7db23ab33ba8968fcfaea1a6f300445574c3704
Submitter: "Zuul (22348)"
Branch: stable/yoga

commit f7db23ab33ba8968fcfaea1a6f300445574c3704
Author: Takashi Kajinami <email address hidden>
Date: Thu Nov 2 13:24:58 2023 +0900

    inspector: Fix missing new line in dnsmasq.conf with multiple subnets

    ... and make pattern match for inspector dnsmasq.conf more
    strict to detect missing new lines or unnecessary elements.

    Closes-Bug: #2042526
    Change-Id: I03abeb7c1519f5a2cbcddaa3722d4053eab3566f
    (cherry picked from commit e1a89eb585aedcaba57fcfde1585162d37a6c1ba)
    (cherry picked from commit 5d73c1aa1c02d42380735dc548e52a5a030e2fdf)
    (cherry picked from commit c968ac85a0895c82411224ade3d0597722e81639)
    (cherry picked from commit e5dc24d158e739ddec0372a54b97ce9fb8160ca6)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/puppet-ironic 20.4.2 release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/puppet-ironic 22.1.0 release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/puppet-ironic 23.1.0 release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/puppet-ironic 24.0.0 release.