Remove obsolete check_changes jobs from Ariane-managed workflows

These workflows are invoked through Ariane which handles change detection.
Removed check_changes jobs and added paths-ignore-regex to ariane-config.yaml.

Workflows: k8s-kind-network-e2e.yaml, tests-smoke-ipv6.yaml, tests-smoke-conformance.yaml

Note: tests-smoke.yaml and documentation.yaml are not Ariane-managed (no workflow_dispatch),
so they retain their check_changes jobs.

Fixes: cilium#46676
Signed-off-by: Shubham Chauhan <shubhamx4mail@gmail.com>

Author: Shubham Chauhan

.github/ariane-config.yaml

@@ -267,4 +267,10 @@ workflows:
   tests-cifuzz.yaml:
     paths-regex: (\.github/workflows/tests-cifuzz\.yaml|fuzz_test.go|test/fuzzing/)
   k8s-kind-network-policies-e2e.yaml:
-    paths-ignore-regex: (Documentation/|test/)
+    paths-ignore-regex: (Documentation/|test/)
+  tests-smoke-conformance.yaml:
+    paths-ignore-regex: ((bpf/complexity-tests|bpf/tests|test|Documentation|hubble|.github/actions/cl2-modules|.github/actions/e2e|.github/actions/ginkgo)/|(.github/renovate\.json5|README.rst|CODEOWNERS|stable.txt|.*\.md|.*_test\.go)$)
+  k8s-kind-network-e2e.yaml:
+    paths-ignore-regex: ((bpf/complexity-tests|bpf/tests|test|Documentation|hubble|.github/actions/cl2-modules|.github/actions/e2e|.github/actions/ginkgo)/|(.github/renovate\.json5|README.rst|CODEOWNERS|stable.txt|.*\.md|.*_test\.go)$)
+  tests-smoke-ipv6.yaml:
+    paths-ignore-regex: ((bpf/complexity-tests|bpf/tests|test|Documentation|hubble|.github/actions/cl2-modules|.github/actions/e2e|.github/actions/ginkgo)/|(.github/renovate\.json5|README.rst|CODEOWNERS|stable.txt|.*\.md|.*_test\.go)$)

.github/workflows/k8s-kind-network-e2e.yaml

@@ -60,33 +60,8 @@ jobs:
         with:
           sha: ${{ inputs.SHA || github.sha }}
 
-  check_changes:
-    name: Deduce required tests from code changes
-    runs-on: ubuntu-24.04
-    outputs:
-      tested: ${{ steps.tested-tree.outputs.src }}
-    steps:
-      - name: Checkout code
-        if: ${{ !github.event.workflow_dispatch }}
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-        with:
-          persist-credentials: false
-          fetch-depth: 0
-      - name: Check code changes
-        uses: dorny/paths-filter@fbd0ab8f3e69293af611ebaee6363fc25e6d187d # v4.0.1
-        id: tested-tree
-        with:
-          # For `push` events, compare against the `ref` base branch
-          # For `workflow_dispatch` events, this is ignored and will compare against the pull request base branch
-          base: ${{ github.ref }}
-          filters: |
-            src:
-              - '!(test|Documentation)/**'
-
   kubernetes-e2e:
     name: K8s Network E2E tests
-    needs: check_changes
-    if: ${{ needs.check_changes.outputs.tested == 'true' }}
     runs-on: ${{ vars.GH_RUNNER_EXTRA_POWER_UBUNTU_LATEST || 'ubuntu-24.04' }}
     timeout-minutes: 90
     strategy:

.github/workflows/tests-smoke-conformance.yaml

@@ -73,35 +73,9 @@ jobs:
         with:
           sha: ${{ inputs.SHA || github.sha }}
 
-  check_changes:
-    name: Deduce required tests from code changes
-    runs-on: ubuntu-24.04
-    outputs:
-      tested: ${{ steps.tested-tree.outputs.src }}
-    steps:
-      - name: Checkout code
-        if: ${{ !github.event.workflow_dispatch }}
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-        with:
-          persist-credentials: false
-          fetch-depth: 0
-      - name: Check code changes
-        uses: dorny/paths-filter@fbd0ab8f3e69293af611ebaee6363fc25e6d187d # v4.0.1
-        id: tested-tree
-        with:
-          # For `push` events, compare against the `ref` base branch
-          # For `workflow_dispatch` events, this is ignored and will compare against the pull request base branch
-          base: ${{ github.ref }}
-          filters: |
-            src:
-              - '!(test|Documentation)/**'
-              - '!**/*.md'
-
   conformance-test:
     env:
       job_name: "Conformance Smoke Test"
-    needs: check_changes
-    if: ${{ needs.check_changes.outputs.tested == 'true' }}
     runs-on: ubuntu-24.04
     name: Installation and Conformance Test
     steps:

.github/workflows/tests-smoke-ipv6.yaml

@@ -64,35 +64,9 @@ jobs:
         with:
           sha: ${{ inputs.SHA || github.sha }}
 
-  check_changes:
-    name: Deduce required tests from code changes
-    runs-on: ubuntu-24.04
-    outputs:
-      tested: ${{ steps.tested-tree.outputs.src }}
-    steps:
-      - name: Checkout code
-        if: ${{ !github.event.workflow_dispatch }}
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
-        with:
-          persist-credentials: false
-          fetch-depth: 0
-      - name: Check code changes
-        uses: dorny/paths-filter@fbd0ab8f3e69293af611ebaee6363fc25e6d187d # v4.0.1
-        id: tested-tree
-        with:
-          # For `push` events, compare against the `ref` base branch
-          # For `workflow_dispatch` events, this is ignored and will compare against the pull request base branch
-          base: ${{ github.ref }}
-          filters: |
-            src:
-              - '!(test|Documentation)/**'
-              - '!**/*.md'
-
   conformance-test-ipv6:
     env:
       job_name: "Conformance Smoke Test with IPv6"
-    needs: check_changes
-    if: ${{ needs.check_changes.outputs.tested == 'true' }}
     runs-on: ubuntu-24.04
     name: Installation and Conformance Test (ipv6)
     steps: