Split travis jobs to avoid timeouts

.travis.yml

@@ -1,3 +1,5 @@
+dist: trusty
+
 sudo: required
 
 services:
@@ -6,7 +8,9 @@ services:
 language: go
 
 notifications:
-  email: true
+  email:
+    on_failure: always
+    on_success: never
 
 go:
   - 1.9.2
@@ -43,6 +47,20 @@ jobs:
     - test/e2e/up.sh
     script:
     - make e2e-test
-  - stage: publish
+  # split builds to avoid job timeouts
+  - stage: publish amd64
+    if: type = api AND branch = master AND repo = kubernetes/ingress-nginx
     script:
-    - .travis/publish.sh
+    - ARCH=amd64 .travis/publish.sh
+  - stage: publish arm
+    if: type = api AND branch = master AND repo = kubernetes/ingress-nginx
+    script:
+    - ARCH=arm .travis/publish.sh
+  - stage: publish arm64
+    if: type = api AND branch = master AND repo = kubernetes/ingress-nginx
+    script:
+    - ARCH=arm64 .travis/publish.sh
+  - stage: publish ppc64le
+    if: type = api AND branch = master AND repo = kubernetes/ingress-nginx
+    script:
+    - ARCH=ppc64le .travis/publish.sh