1. add timeout for kubectl rollout status;
2. sleep 5 seconds after deleting Pods.

Co-authored-by: wang_yudong <wang_yudong@inspur.com>

Previous patch doesn't change the readiness prob interval which may leader two probs run in the same period and always steal the lock from ovn-northd. Increase the interval and add back the leader check.

(cherry picked from commit 178cf7b8)

(cherry picked from commit e9e2c911)

When node load is high, the nc probe may take more than the default 1 second and lead prob failed.

(cherry picked from commit fafd5555)

(cherry picked from commit 2be11269)