ci: use codecov flags

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

.github/workflows/ci-main.yml

@@ -96,6 +96,8 @@ jobs:
           testspace [unittest]unittest.xml --link=codecov
       - if: ${{ always() }}
         uses: codecov/codecov-action@v3
+        with:
+          flags: unit
   test-integration:
     runs-on: ubuntu-latest
     steps:
@@ -117,6 +119,8 @@ jobs:
           testspace [integration]unittest.xml --link=codecov
       - if: ${{ always() }}
         uses: codecov/codecov-action@v3
+        with:
+          flags: integration
   test-e2e-provider:
     runs-on: ubuntu-latest
     steps:
@@ -151,6 +155,8 @@ jobs:
           testspace [e2e-provider]unittest.xml --link=codecov
       - if: ${{ always() }}
         uses: codecov/codecov-action@v3
+        with:
+          flags: e2e
   test-e2e-rest:
     runs-on: ubuntu-latest
     steps:
@@ -185,6 +191,8 @@ jobs:
           testspace [e2e-rest]unittest.xml --link=codecov
       - if: ${{ always() }}
         uses: codecov/codecov-action@v3
+        with:
+          flags: e2e
   ci-core-mark:
     needs:
       - lint