add prow github gitactions

Signed-off-by: Jooho Lee <[email protected]>

Author: Jooho

.github/workflows/prow-github.yml

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+# Run specified actions or jobs for issue and PR comments
+
+name: "Prow github actions"
+on:
+  issue_comment:
+    types: [created]
+
+# Grant additional permissions to the GITHUB_TOKEN
+permissions:
+  # Allow labeling issues
+  issues: write
+  # Allow adding a review to a pull request
+  pull-requests: write
+
+jobs:
+  prow-execute:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: jpmcb/[email protected]
+        with:
+          github-token: "${{ secrets.GITHUB_TOKEN }}"
+          prow-commands: "/assign
+            /unassign
+            /approve
+            /retitle
+            /area
+            /kind
+            /priority
+            /remove
+            /lgtm
+            /close
+            /reopen
+            /lock
+            /milestone
+            /hold
+            /cc
+            /uncc"

.github/workflows/prow-pr-automerge.yml

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+# This Github workflow will check every hour for PRs with the lgtm label and will attempt to automatically merge them.
+# If the hold label is present, it will block automatic merging.
+
+name: "Prow merge on lgtm label"
+on:
+  schedule:
+  - cron: "0 * * * *" # every hour
+
+jobs:
+  auto-merge:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: jpmcb/[email protected]
+        with:
+          jobs: 'lgtm'
+          github-token: "${{ secrets.GITHUB_TOKEN }}"
+          merge-method: 'squash'

.github/workflows/prow-pr-remove-lgtm.yml

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+name: Run Jobs on PR
+on: pull_request
+
+jobs:
+  execute:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: jpmcb/[email protected]
+        with:
+          jobs: lgtm
+          github-token: '${{ secrets.GITHUB_TOKEN }}'

.github/workflows/re-run-action.yml

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+name: Re-Run PR tests
+
+on:
+  issue_comment:
+    types: [created]
+
+jobs:
+  rerun_pr_tests:
+    name: rerun_pr_tests
+    if: ${{ github.event.issue.pull_request }}
+    runs-on: ubuntu-20.04
+    steps:
+    - uses: estroz/rerun-actions@main
+      with:
+        repo_token: ${{ secrets.GITHUB_TOKEN }}
+        comment_id: ${{ github.event.comment.id }}

.prowlabels.yaml

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+# Labels for labeling issues and pull requests using GitHub prow action.
+kind:
+    - 'bug'
+    - 'security'
+    - 'feature'
+    - 'docs'
+
+priority:
+    - 'p0'
+    - 'p1'
+    - 'p2'

OWNERS

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+approvers:
+  - elevran
+  - kfirtoledo
+  - kfswain
+  - nilig
+  - nirrozenbaum
+  - shmuelk
+
+reviewers:
+  - elevran
+  - kfirtoledo
+  - kfswain
+  - nilig
+  - nirrozenbaum
+  - shmuelk