Use stable names for GH workflow jobs

.github/workflows/main.yml

@@ -10,27 +10,32 @@ env:
   GOPATH: ${{ github.workspace }}/go
 
 jobs:
-  build:
-    strategy:
-      # Note, the following build matrix generates jobs that are blocking via prow.
-      # When changing the versions or images below, please update prow config too:
-      # https://github.com/kubernetes/test-infra/blob/566fea31f63670f583dde93b55fcb0a13bdc2562/config/prow/config.yaml
-      matrix:
-        os: [ubuntu-18.04, macos-10.15]
-        go: [1.13, 1.14]
-        exclude:
-          - os: macos-10.15
-            go: 1.14
-      fail-fast: true
-
-    runs-on: ${{ matrix.os }}
-
+  build-linux-amd64:
+    runs-on: ubuntu-20.04
     steps:
       - name: Set up go
         uses: actions/setup-go@v1
         with:
-          go-version: ${{ matrix.go }}
-        id: go
+          go-version: 1.14
+          stable: true
+
+      - uses: actions/checkout@v2
+        with:
+          path: ${{ env.GOPATH }}/src/k8s.io/kops
+
+      - name: make nodeup examples test
+        working-directory: ${{ env.GOPATH }}/src/k8s.io/kops
+        run: |
+          make nodeup examples test
+
+  build-macos-amd64:
+    runs-on: macos-10.15
+    steps:
+    - name: Set up go
+      uses: actions/setup-go@v1
+      with:
+        go-version: 1.14
+        stable: true
 
     - uses: actions/checkout@v2
       with:
@@ -42,20 +47,13 @@ jobs:
         make nodeup examples test
 
   verify:
-    strategy:
-      matrix:
-        os: [ubuntu-18.04]
-        go: [1.13]
-      fail-fast: true
-
-    runs-on: ${{ matrix.os }}
-
+    runs-on: ubuntu-20.04
     steps:
       - name: Set up go
         uses: actions/setup-go@v1
         with:
-          go-version: ${{ matrix.go }}
-        id: go
+          go-version: 1.14
+          stable: true
 
       - uses: actions/checkout@v2
         with: