feat: define GH_PAT and GH_USERNAME to pull internal images (#99)

Author: natalian98

.github/workflows/_charm-tests-integration.yaml

@@ -31,6 +31,11 @@ on:
         description: Run integration tests with tmate debugging enabled
         required: false
         default: false
+    secrets:
+      GH_USERNAME:
+        required: false
+      GH_PAT:
+        required: false
 
 jobs:
   build:
@@ -87,6 +92,9 @@ jobs:
           name: ${{ github.sha }}-build
 
       - name: Run integration tests
+        env:
+          GH_USERNAME: ${{ secrets.GH_USERNAME }}
+          GH_PAT: ${{ secrets.GH_PAT }}
         run: tox -e ${{ inputs.tox-integration-test-targets }} -- --model testing
 
       - name: Get contexts

.github/workflows/charm-pull-request.yaml

@@ -39,6 +39,10 @@ on:
     secrets:
       CHARMCRAFT_CREDENTIALS:
         required: false
+      GH_USERNAME:
+        required: false
+      GH_PAT:
+        required: false
 
 jobs:
   linting:
@@ -56,6 +60,9 @@ jobs:
   integration-test:
     name: Integration Tests
     uses: ./.github/workflows/_charm-tests-integration.yaml
+    secrets:
+      GH_USERNAME: ${{ secrets.GH_USERNAME }}
+      GH_PAT: ${{ secrets.GH_PAT }}
     with:
       container-name: ${{ inputs.container-name }}
       charm-config-path: ${{ inputs.charm-config-path }}