Update timeouts for scalability-related suites

hack/jenkins/job-configs/kubernetes-e2e.yaml

@@ -53,7 +53,7 @@
             timeout: 90
         - 'gce-scalability':
             description: 'Run scalability E2E tests on GCE using the latest successful build.'
-            timeout: 210
+            timeout: 120
         - 'gce-flannel':
             description: 'Run E2E tests on GCE using Flannel and the latest successful build. This suite is quarantined in a dedicated project because Flannel integration is experimental.'
             timeout: 90

hack/jenkins/job-configs/kubernetes-kubemark.yaml

@@ -34,15 +34,15 @@
     suffix:
         - 'gce':
             description: 'Continuously run Density test on Kubemark.'
-            timeout: 90
+            timeout: 120
             cron-string: '@hourly'
         - '500-gce':
             description: 'Run Density test on Kubemark in a large cluster that we should be able to handle.'
-            timeout: 180
+            timeout: 300
             cron-string: '@hourly'
         - 'gce-scale':
             description: 'Run Density test on Kubemark in very large cluster. Currently only scheduled to run every 6 hours so as not to waste too many resources.'
-            timeout: 180
-            cron-string: 'H H/6 * * *'
+            timeout: 480
+            cron-string: 'H H/8 * * *'
     jobs:
         - 'kubernetes-kubemark-{suffix}'