Replace trigger-test-gui-e2e jobs with dedicated CCE, CEE, CSE jobs

... to have same structure as for composition, integration and update
tests. This removes complexity, LoC to maintain, job inconsistency and
reduces the number of jobs running on Jenkins at a heavy chain start
from 4 to 3 for the GUI e2e tests.

CMK-25062

Change-Id: I765a4ac9de7f5674ef2a3094ca35c879f2ce2828

Author: JonasScharpf

buildscripts/scripts/trigger-post-submit-test-cascade-heavy.groovy

@@ -16,6 +16,9 @@ def main() {
         "test-composition-single-f12less-cme",
         "test-composition-single-f12less-cre",
         "test-gui-crawl-f12less",
+        "test-gui-e2e-cce",
+        "test-gui-e2e-cee",
+        "test-gui-e2e-cse",
         "test-integration-agent-plugin",
         "test-integration-single-f12less",
         "test-integration-single-f12less-cme",
@@ -28,7 +31,6 @@ def main() {
         "test-update-single-f12less-cce",
         "test-update-single-f12less-cme",
         "test-update-single-f12less-cre",
-        "trigger-test-gui-e2e",
     ];
 
     print(