Use Github.com actions to run tests and e2e tests. (zalando#1215)

* Use GH action to run tests and end 2 end tests.
* Remove travis.

Author: Jan-M

.github/workflows/run_e2e.yaml

@@ -0,0 +1,24 @@
+name: ubuntu
+
+on: 
+  pull_request:
+  push:
+    branches:
+    - master
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v1
+    - uses: actions/setup-go@v2
+      with:
+          go-version: "^1.15.5"
+    - name: Make dependencies
+      run: make deps
+    - name: Compile
+      run: make linux
+    - name: Run unit tests
+      run: go test ./...
+    - name: Run end-2-end tests
+      run: make e2e

.travis.yml

@@ -16,7 +16,7 @@ pipeline:
         - desc: 'Install go'
           cmd: |
             cd /tmp
-            wget -q https://storage.googleapis.com/golang/go1.14.7.linux-amd64.tar.gz -O go.tar.gz
+            wget -q https://storage.googleapis.com/golang/go1.15.5.linux-amd64.tar.gz -O go.tar.gz
             tar -xf go.tar.gz
             mv go /usr/local
             ln -s /usr/local/go/bin/go /usr/bin/go