CI: Run e2e tests in parallel using multiple suites (#41748)

* Split suite1 to multiple e2e test suites

* Update drone yaml

* Add missing arg

* Extract cypress install step

* Change image on e2e tests step

* Sync with main

* Add cypress cache volume

* Try with grafana/ci-e2e:12.19.0-1 image

* Update grabpl version to 2.7.2

* Revert a11y failure back to 'always'

scripts/drone/utils/utils.star

@@ -37,6 +37,10 @@ def pipeline(
         'trigger': trigger,
         'services': services,
         'steps': steps,
+        'volumes': [{
+            'name': 'cypress_cache',
+            'temp': {},
+        }],
         'depends_on': depends_on,
     }
     pipeline.update(platform_conf)