[ci] Synchronize serverless tests between pipelines (#167934)

We're running serverless cypress tests in three locations

1) on-merge
2) pull requests
3) verifying the latest elasticsearch snapshot

These have diverged slightly, causing a small issue where we missed
timeouts in pull requests due to a longer timeout in on-merge (which
triggers our notifications).

Timeouts are all set to 60 minutes. Target time is 40 minutes, with a 20
minute buffer that we can use to increase the parallelism as needed.

.buildkite/pipelines/es_serverless/verify_es_serverless_image.yml

@@ -50,7 +50,7 @@ steps:
         agents:
           queue: n2-4-spot
         depends_on: build
-        timeout_in_minutes: 40
+        timeout_in_minutes: 60
         parallelism: 2
         retry:
           automatic:
@@ -74,8 +74,8 @@ steps:
         agents:
           queue: n2-4-spot
         depends_on: build
-        timeout_in_minutes: 120
-        parallelism: 2
+        timeout_in_minutes: 60
+        parallelism: 4
         retry:
           automatic:
             - exit_status: '*'

.buildkite/pipelines/on_merge.yml

@@ -84,7 +84,7 @@ steps:
     agents:
       queue: n2-4-spot
     depends_on: build
-    timeout_in_minutes: 40
+    timeout_in_minutes: 60
     parallelism: 2
     retry:
       automatic:
@@ -108,8 +108,8 @@ steps:
     agents:
       queue: n2-4-spot
     depends_on: build
-    timeout_in_minutes: 120
-    parallelism: 2
+    timeout_in_minutes: 60
+    parallelism: 4
     retry:
       automatic:
         - exit_status: '*'

.buildkite/pipelines/pull_request/base.yml

@@ -62,49 +62,49 @@ steps:
     agents:
       queue: n2-4-spot
     depends_on: build
-    timeout_in_minutes: 40
+    timeout_in_minutes: 60
     parallelism: 2
     retry:
       automatic:
         - exit_status: '*'
           limit: 1
 
-  # status_exception: Native role management is not enabled in this Elasticsearch instance
-  # - command: .buildkite/scripts/steps/functional/security_serverless_defend_workflows.sh
-  #   label: 'Serverless Security Defend Workflows Cypress Tests'
-  #   agents:
-  #     queue: n2-4-spot
-  #   depends_on: build
-  #   timeout_in_minutes: 40
-  #   retry:
-  #     automatic:
-  #       - exit_status: '*'
-  #         limit: 1
-
-  - command: .buildkite/scripts/steps/functional/security_serverless_investigations.sh
-    label: 'Serverless Security Investigations Cypress Tests'
+  - command: .buildkite/scripts/steps/functional/security_serverless_explore.sh
+    label: 'Serverless Explore - Security Solution Cypress Tests'
     agents:
       queue: n2-4-spot
     depends_on: build
-    timeout_in_minutes: 40
-    parallelism: 4
+    timeout_in_minutes: 60
+    parallelism: 2
     retry:
       automatic:
         - exit_status: '*'
           limit: 1
 
-  - command: .buildkite/scripts/steps/functional/security_serverless_explore.sh
-    label: 'Serverless Security Explore Cypress Tests'
+  - command: .buildkite/scripts/steps/functional/security_serverless_investigations.sh
+    label: 'Serverless Investigations - Security Solution Cypress Tests'
     agents:
       queue: n2-4-spot
     depends_on: build
-    timeout_in_minutes: 40
-    parallelism: 2
+    timeout_in_minutes: 60
+    parallelism: 4
     retry:
       automatic:
         - exit_status: '*'
           limit: 1
 
+  # status_exception: Native role management is not enabled in this Elasticsearch instance
+  # - command: .buildkite/scripts/steps/functional/security_serverless_defend_workflows.sh
+  #   label: 'Serverless Security Defend Workflows Cypress Tests'
+  #   agents:
+  #     queue: n2-4-spot
+  #   depends_on: build
+  #   timeout_in_minutes: 60
+  #   retry:
+  #     automatic:
+  #       - exit_status: '*'
+  #         limit: 1
+
   - command: .buildkite/scripts/steps/lint.sh
     label: 'Linting'
     agents: