🌱 Setup nightly workflows for repo and global CI

Setup new `nightly-*.yaml` workflows that reuse the
base PR/on-merge workflows.  It's marginally easier
to keeps the scheduled runs in a separate workflow
from the push / pull_request workflows.

We want global nightlys to help keep any problems that
may come up in e2e UI tests to a minimum.

Fixes: konveyor#1986

Signed-off-by: Scott J Dickerson <[email protected]>

.github/workflows/ci-global.yml

@@ -4,10 +4,13 @@ on:
   push:
     branches:
       - "main"
+
   pull_request:
     branches:
       - "main"
 
+  workflow_call:
+
 ###
 # The global CI settings need to be adjusted for the `release-*`` branches such that:
 #  1. The operator uses the correct `:release-*` images
@@ -18,6 +21,7 @@ on:
 #     branches:
 #       - 'main'
 #       - 'release-*'
+#
 #   pull_request:
 #     branches:
 #       - 'main'

.github/workflows/ci-repo.yml

@@ -11,11 +11,10 @@ on:
       - "main"
       - "release-*"
 
-  schedule:
-    - cron: "35 5 * * *" # every day @ 5:35am UTC
-
   workflow_dispatch:
 
+  workflow_call:
+
 jobs:
   unit-test-lookup-image:
     runs-on: ubuntu-latest

.github/workflows/nightly-ci-global.yaml

@@ -0,0 +1,11 @@
+name: Nightly CI - main (global konveyor CI)
+
+on:
+  schedule:
+    - cron: "35 5 * * *" # every day @ 5:35am UTC
+
+  workflow_dispatch:
+
+jobs:
+  nightly:
+    uses: ./.github/workflows/ci-global.yml

.github/workflows/nightly-ci-repo.yaml

@@ -0,0 +1,11 @@
+name: Nightly CI - main (repo level)
+
+on:
+  schedule:
+    - cron: "35 5 * * *" # every day @ 5:35am UTC
+
+  workflow_dispatch:
+
+jobs:
+  nightly:
+    uses: ./.github/workflows/ci-repo.yml