Add consul-k8s, go-discovery (#29043)

Testing looks like its better suited for a full k8s environment, so
holding off on more detailed functional tests here.

Also includes go-discovery, [which is a runtime dependency of
consul-k8s](https://github.com/hashicorp/consul-k8s/blob/0c3745134cbb81198758c442b8d80d61bb351bed/control-plane/Dockerfile#L58).
go-discovery is unversioned upstream.

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Related: chainguard-dev/image-requests#4271

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#### For new package PRs only
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- [ ] This PR is marked as fixing a pre-existing package request bug
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Not eol.date, but looks like multiple version streams supported: 1.1 -
1.5

#### For new version streams
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- [x] The upstream project actually supports multiple concurrent
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- [x] Any subpackages include the version string in their package name
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consul-k8s.yaml

@@ -0,0 +1,57 @@
+package:
+  name: consul-k8s
+  version: 1.5.3
+  epoch: 0
+  description: The consul-k8s includes first-class integrations between Consul and Kubernetes.
+  copyright:
+    - license: MPL-2.0
+  dependencies:
+    runtime:
+      - go-discover
+
+pipeline:
+  - uses: git-checkout
+    with:
+      repository: https://github.com/hashicorp/consul-k8s
+      expected-commit: 2cb07690ef4f557e65cd0606af30deafd18c3f6a
+      tag: v${{package.version}}
+
+  - uses: go/build
+    with:
+      modroot: ./control-plane/cni
+      output: consul-cni
+      packages: .
+
+  - uses: go/build
+    with:
+      modroot: ./control-plane
+      output: consul-k8s-control-plane
+      packages: .
+
+subpackages:
+  - name: ${{package.name}}-cli
+    description: "CLI for interacting with Consul on Kubernetes"
+    pipeline:
+      - uses: go/build
+        with:
+          modroot: ./cli
+          output: consul-k8s
+          packages: .
+    test:
+      pipeline:
+        - name: Verify help
+          runs: |
+            consul-k8s --help
+
+update:
+  enabled: true
+  github:
+    identifier: hashicorp/consul-k8s
+    strip-prefix: v
+
+test:
+  pipeline:
+    - name: Verify help
+      runs: |
+        consul-cni --help
+        consul-k8s-control-plane --help

go-discover.yaml

@@ -0,0 +1,33 @@
+#nolint:valid-pipeline-git-checkout-tag
+package:
+  name: go-discover
+  version: 0_git20240923
+  epoch: 0
+  description: go-discover is a Go (golang) library and command line tool to discover ip addresses of nodes in cloud environments based on meta information like tags provided by the environment.
+  copyright:
+    - license: MPL-2.0
+
+pipeline:
+  - uses: git-checkout
+    with:
+      repository: https://github.com/hashicorp/go-discover
+      expected-commit: 275a71457aa412bf20df9f9b77c380667164a5e6
+      branch: master
+
+  - uses: go/build
+    with:
+      output: discover
+      packages: ./cmd/discover
+
+update:
+  enabled: true
+  git: {}
+  schedule:
+    period: daily
+    reason: Upstream does not maintain tags or releases
+
+test:
+  pipeline:
+    - name: Verify help
+      runs: |
+        discover --help