Let listen_addresses be defined independently #865
Merged
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Postgresql module is often extended by other shared modules. Shared modules should not use resource-like class definitions to let the callers use them when necessary. It is still a reasonable behaviour for the shared module to set max_connections. Making it optional would allow this to happen.
Removing the default value "localhost" should not break anything as it is already the default of PostgreSQL and on every distribution I know of.