crictl exec: add --quiet/-q, --ignore-error/-e and --parallel flags
#2776
| Job | Run time |
|---|---|
| 1m 38s | |
| 1m 33s | |
| 1m 38s | |
| 1m 33s | |
| 1m 45s | |
| 1m 41s | |
| 1m 46s | |
| 3m 15s | |
| 14m 49s |