ignore context deadline exceeded error for bank2 admin check table

[sticnarf]

Signed-off-by: Yilin Chen [email protected]

What problem does this PR solve?

Closes https://github.com/pingcap/tipocket/pull/384 again :(

What is changed and how does it work?

I don't have a good idea about solving the problem. ADMIN CHECK TABLE has various error patterns and is hard to match as well. So, still, I add "context deadline exceeded" to the filter list.

Does this PR introduce a user-facing change?:

NONE