tests: decrease timeout for a contract cache

[evgeniiz321]

closes #859

[evgeniiz321]

@roman-khimov do you know what is this NEOFS_CONTRACT_CACHE_TIMEOUT and why are we waiting 30s for it after we set eacl? I decreased it to 2, all tests still pass, not sure if we need it at all.

[roman-khimov]

Seems like it was based on ACL cache lifetime. But I can't find it now in the node. It also looks a lot like two 15 blocks, maybe related, maybe not. @cthulhu-rider?

[cthulhu-rider]

cache timeout can be configured. With this, defaullt expiration became 1 block. Initially, it was 30s. I bet previous value was set back then

2s is pretty doubtful except for quick blocks <=1s. I see

neofs-testcases/pytest_tests/lib/helpers/acl.py

Line 176 in f120678

await_mode=True,

. If eACLs are updated with --await flag, having cache timeout is questionable. Only if the setting and reading are done from different endpoints

[roman-khimov]

Test env uses 1s blocks, with --await it should OK to wait for cluster sync in 1-2 blocks, so 2s seems to be safe.