travis: group build/e2e testing in stages

This reduces the number of concurrent jobs that get executed. The "build
test" jobs are relatively quick, and give developers the 1st feedback.
Longer e2e testing now only happens once the build tests have passed.

See-also: https://docs.travis-ci.com/user/build-stages/
Signed-off-by: Niels de Vos <[email protected]>
(cherry picked from commit 43fbc00)

Author: nixpanic

.travis.yml

@@ -53,7 +53,12 @@ before_script:
 
 jobs:
   include:
-    - name: static-check-make
+    # two stages for testing, each stage runs its jobs in parallel, but stages
+    # are run after each other, unless the last stage fails
+    # - build testing
+    # - e2e testing
+    - stage: build testing
+      name: static-check-make
       install:
         - gem install mdl
         - pip install --user --upgrade pip
@@ -73,42 +78,46 @@ jobs:
         - make go-test
         - make mod-check || travis_terminate 1;
 
-    - name: Build multi-architecture image for amd64 and arm64
+    - stage: build testing
+      name: containerized build
       script:
-        - ./scripts/build-multi-arch-image.sh || travis_terminate 1;
+        - make containerized-build || travis_terminate 1;
 
-    - name: containerized build
+    - stage: build testing
+      name: cephcsi on Arm64
+      arch: arm64
       script:
-        - make containerized-build || travis_terminate 1;
+        - scripts/skip-doc-change.sh || travis_terminate 0;
+        - make image-cephcsi || travis_terminate 1;
+        # No CI test job is availabe for Arm64 now due to below issues
+        # - k8s-csi sidecar images for Arm64 are not available
+        # - Travis Arm64 CI job runs inside unprivileged LXD which blocks
+        #   launching minikube test environment
+        - travis_terminate 0    # deploy only on x86
 
-    - name: cephcsi with kube 1.14.10
+    - stage: e2e testing
+      name: cephcsi with kube 1.14.10
       script:
         - scripts/skip-doc-change.sh || travis_terminate 0;
         - make image-cephcsi || travis_terminate 1;
         - scripts/travis-functest.sh v1.14.10 || travis_terminate 1;
 
-    - name: cephcsi with kube 1.15.6
+    - stage: e2e testing
+      name: cephcsi with kube 1.15.6
       script:
         - scripts/skip-doc-change.sh || travis_terminate 0;
         - make image-cephcsi || travis_terminate 1;
         - scripts/travis-functest.sh v1.15.6 || travis_terminate 1;
 
-    - name: cephcsi with kube 1.17.0
+    - stage: e2e testing
+      name: cephcsi with kube 1.17.0
       script:
         - scripts/skip-doc-change.sh || travis_terminate 0;
         - make image-cephcsi || travis_terminate 1;
         - scripts/travis-functest.sh v1.17.0 || travis_terminate 1;
-    - name: cephcsi on Arm64
-      arch: arm64
-      script:
-        - scripts/skip-doc-change.sh || travis_terminate 0;
-        - make image-cephcsi || travis_terminate 1;
-        # No CI test job is availabe for Arm64 now due to below issues
-        # - k8s-csi sidecar images for Arm64 are not available
-        # - Travis Arm64 CI job runs inside unprivileged LXD which blocks
-        #   launching minikube test environment
-        - travis_terminate 0    # deploy only on x86
-    - name: cephcsi helm charts with kube 1.17.0
+
+    - stage: e2e testing
+      name: cephcsi helm charts with kube 1.17.0
       script:
         - scripts/skip-doc-change.sh || travis_terminate 0;
         - make image-cephcsi || travis_terminate 1;