compile coverage report and add badges.

.github/workflows/run_e2e.yaml

@@ -1,4 +1,4 @@
-name: ubuntu
+name: operator-tests
 
 on: 
   pull_request:

.github/workflows/run_tests.yaml

@@ -0,0 +1,29 @@
+name: operator-e2e-tests
+
+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 -race -covermode atomic -coverprofile=coverage.out ./...
+    - name: Convert coverage to lcov
+      uses: jandelgado/gcov2lcov-action@v1.0.5
+    - name: Coveralls
+      uses: coverallsapp/github-action@master
+      with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}
+        path-to-lcov: coverage.lcov

README.md

@@ -1,5 +1,11 @@
 # Postgres Operator
 
+![Tests](https://github.com/zalando/postgres-operator/workflows/operator-tests/badge.svg)
+
+![E2E Tests](https://github.com/zalando/postgres-operator/workflows/operator-e2e-tests/badge.svg)
+
+[![Coverage Status](https://coveralls.io/repos/github/zalando/postgres-operator/badge.svg?branch=master)](https://coveralls.io/github/zalando/postgres-operator?branch=master)
+
 <img src="docs/diagrams/logo.png" width="200">
 
 The Postgres Operator delivers an easy to run highly-available [PostgreSQL](https://www.postgresql.org/)