Backport of Fix a bug that wrongly trims domains when there is an overlap with DC name into release/1.15.x

[hc-github-team-consul-core]

Backport

This PR is auto-generated from #17160 to be assessed for backporting due to the inclusion of the label backport/1.15.

🚨

Warning automatic cherry-pick of commits failed. If the first commit failed,
you will see a blank no-op commit below. If at least one commit succeeded, you
will see the cherry-picked commits up to, not including, the commit where
the merge conflict occurred.

The person who merged in the original PR is:
@dhiaayachi
This person should manually cherry-pick the original PR into a new backport PR,
and close this one when the manual backport PR is merged in.

merge conflict error: unable to process merge commit: "a1d0fa45017373f32b387fe0ea67675164778ac1", automatic backport requires rebase workflow

The below text is copied from the body of the original PR.

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Fixes #17156

Before this change, when DC name and domain/alt-domain overlap, the domain name incorrectly trimmed from the query.

Example:

Given: datacenter = dc-test, alt-domain = test.consul.
Querying for test-node.node.dc-test.consul will fail, because the code was trimming test.consul instead of just .consul

This change, fixes the issue by adding dot (.) before trimming

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Overview of commits

• 74b15a6 - b6c866e - a1d0fa4 - d6fd5c3 - 2c57d76 - c738b39 - b157426 - 10cef2d - 683a771 - f1d76b0 - 23f5d0e - 585c57f - 737a06e - 17d7aef - 9e4e461 - c26ce0c

[github-team-consul-core-pr-approver]

Auto approved Consul Bot automated PR

[dhiaayachi]

Manually backported