ci: scale down automatic e2e testing (edgelesssys#3949)

* ci: only build new image once a week
* ci: only test stable images on daily test
* ci: stop testing gcp-sev-es on daily test
* ci: scale down weekly e2e tests
* ci: disable tests on azure-tdx

---------

Signed-off-by: Daniel Weiße <[email protected]>

Author: daniel-weisse

.github/workflows/build-os-image-scheduled.yml

@@ -6,9 +6,9 @@ on:
     - cron: "0 21 * * 2" # At 21:00 on Tuesday.
     - cron: "20 21 * * 2" # At 21:20 on Tuesday.
     - cron: "40 21 * * 2" # At 21:40 on Tuesday.
-    - cron: "0 21 * * 4" # At 21:00 on Thursday.
-    - cron: "20 21 * * 4" # At 21:20 on Thursday.
-    - cron: "40 21 * * 4" # At 21:40 on Thursday.
+    # - cron: "0 21 * * 4" # At 21:00 on Thursday.
+    # - cron: "20 21 * * 4" # At 21:20 on Thursday.
+    # - cron: "40 21 * * 4" # At 21:40 on Thursday.
 
 jobs:
   stream:

.github/workflows/e2e-test-daily.yml

@@ -46,8 +46,8 @@ jobs:
       max-parallel: 5
       matrix:
         kubernetesVersion: ["v1.31"] # This should correspond to the current default k8s minor.
-        attestationVariant: ["gcp-sev-es", "gcp-sev-snp", "azure-sev-snp", "azure-tdx", "aws-sev-snp"]
-        refStream: ["ref/main/stream/debug/?", "ref/release/stream/stable/?"]
+        attestationVariant: ["gcp-sev-snp", "azure-sev-snp", "aws-sev-snp"]
+        refStream: ["ref/release/stream/stable/?"] # ["ref/main/stream/debug/?", "ref/release/stream/stable/?"]
         test: ["sonobuoy quick"]
     runs-on: ubuntu-24.04
     permissions: