Add golangci-lint and go test as GitHub Actions.

Signed-off-by: Matt Moyer <moyerm@vmware.com>

.github/workflows/pull-request-ci.yml

@@ -0,0 +1,42 @@
+name: CI
+on:
+  push:
+    tags:
+      - v*
+    branches:
+      - master
+  pull_request:
+
+jobs:
+  golangci:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v1
+        with:
+          version: v1.28
+
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+    - name: Set up Go 1.14
+      uses: actions/setup-go@v2
+      with:
+        go-version: ^1.14
+      id: go
+    - name: Checkout
+      uses: actions/checkout@v2
+    - name: Cache Dependencies
+      uses: actions/cache@v2
+      with:
+        path: ~/go/pkg/mod
+        key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+        restore-keys: |
+          ${{ runner.os }}-go-
+    - name: Build
+      run: go build -v ./...
+    - name: Test
+      run: go test -cover ./...