Implement velero debug (#4022)

This PR added a subcommand `velero debug`, which leverages `crashd` to
collect logs and specs of velero server components and bundle them in a
tarball.

Signed-off-by: Daniel Jiang <jiangd@vmware.com>

.github/workflows/crds-verify-kind.yaml

@@ -11,6 +11,11 @@ jobs:
   build-cli:
     runs-on: ubuntu-latest
     steps:
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.16
+        id: go
       # Look for a CLI that's made for this PR
       - name: Fetch built CLI
         id: cache

.github/workflows/e2e-test-kind.yaml

@@ -11,6 +11,11 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.16
+        id: go
       # Look for a CLI that's made for this PR
       - name: Fetch built CLI
         id: cli-cache