ci: update gitlab ci config (#661)

- Cleanup outdated CI jobs.
- Only run on feature branches.

.gitlab-ci.yml

@@ -1,34 +1,44 @@
----
 include:
-  - project: cloud/operations/ci
-    file: k8s/release.yml
   - project: cloud/integrations/ci
     file:
       - default.yml
-
-stages:
-  - test
-  - e2e-test
-  - build
-  - release
+      - workflows/feature-branches.yml
 
 variables:
-  GOPROXY: goproxy.prodext.hcinfra.de
-  GONOSUMDB: hetzner.cloud
+  GOMODCACHE: $CI_PROJECT_DIR/.cache/go-mod
+  GOCACHE: $CI_PROJECT_DIR/.cache/go-build
+
+cache:
+  key:
+    files:
+      - go.mod
+      - go.sum
+  paths:
+    - $GOMODCACHE
 
-unit:
+build:
+  stage: build
   image: golang:1.22
+  script:
+    - go env
+    - go mod download
+
+test:lint:
   stage: test
+  image: golangci/golangci-lint:v1.59
   script:
-    - go test $(go list ./... | grep -v e2etests | grep -v integrationtests) -v
+    - golangci-lint run -v
 
-e2e:
-  image: docker:git
-  stage: e2e-test
-  parallel:
-    matrix:
-      - K8S_VERSION: [k8s-1.23.15, k8s-1.24.9, k8s-1.25.5, k8s-1.26.0]
-  before_script:
-    - apk add --no-cache git make musl-dev go
+test:unit:
+  stage: test
+  image: golang:1.22
   script:
-    - go test $(go list ./... | grep e2etests) -v -timeout 60m
+    - go test -v -coverprofile=coverage.txt -covermode count ./...
+    - go get github.com/boumenot/gocover-cobertura
+    - go run github.com/boumenot/gocover-cobertura < coverage.txt > coverage.xml
+  artifacts:
+    reports:
+      coverage_report:
+        coverage_format: cobertura
+        path: coverage.xml
+  coverage: "/coverage: \\d+.\\d+% of statements/"