Bump kubernetes-build timeout.

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

@@ -7,7 +7,7 @@
     builders:
         - shell: 'JENKINS_BUILD_STARTED=true bash <(curl -fsS --retry 3 "https://raw.githubusercontent.com/kubernetes/kubernetes/master/hack/jenkins/upload-to-gcs.sh")'
         - shell: |
-            timeout -k {kill-timeout}m 30m ./hack/jenkins/build.sh && rc=$? || rc=$?
+            timeout -k {kill-timeout}m {timeout}m ./hack/jenkins/build.sh && rc=$? || rc=$?
             {report-rc}
     properties:
         - mail-watcher
@@ -46,11 +46,15 @@
     build:
         - 'build':
             branch: 'master'
+            timeout: 50
         - 'build-1.0':
             branch: 'release-1.0'
+            timeout: 30
         - 'build-1.1':
             branch: 'release-1.1'
+            timeout: 30
         - 'build-1.2':
             branch: 'release-1.2'
+            timeout: 30
     jobs:
         - 'kubernetes-{build}'