add connection pool so we don't leak connections #152
Merged
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Connections are leaked and recreated when -crd-connect is passed. This change adds connection pooling as implemented in nats-surveyor https://github.com/nats-io/nats-surveyor/blob/main/surveyor/conn_pool.go
Tested by reproducing findings mentioned in #151. Controller no longer keeps unnecessary connections open and does not leak them on errors in reconcile loop.
Resolves #151