wait until nodes become ready before installing helm chart

Signed-off-by: bg-furiosa <[email protected]>

.github/workflows/examine_pr_changes.yml

@@ -37,5 +37,8 @@ jobs:
           helm repo add nfd https://kubernetes-sigs.github.io/node-feature-discovery/charts
       - name: helm lint
         run: ct lint --chart-dirs=charts --target-branch=${{ github.event.repository.default_branch }} --validate-maintainers=false --check-version-increment=false --charts charts/furiosa-device-plugin,charts/furiosa-feature-discovery,charts/furiosa-metrics-exporter
+      - name: Wait for nodes to be ready
+        run: |
+          kubectl wait --for=condition=Ready nodes --all --timeout=300s
       - name: try install
         run: ct install --chart-dirs charts --charts charts/furiosa-device-plugin,charts/furiosa-feature-discovery,charts/furiosa-metrics-exporter --namespace kube-system