crds_gossip tests start large networks, which with large thread-pools
will exhaust system resources, causing failures in ci tests:
https://buildkite.com/solana-labs/solana/builds/31953
The commit limits size of thread-pools in the test.
(cherry picked from commit 2c669f65f1
)
Co-authored-by: behzad nouri <behzadnouri@gmail.com>