Add "network" as an alias for "io.networkResolution" connection string property

Suggested release note:

Added "network" as an alias for the "io.networkResolution" connection string parameter. For example, the connection string "couchbase://example.com?network=external" is now equivalent to "couchbase://example.com?io.networkResolution=external". This was done for compatibility with other Couchbase SDKs that use "network" as the name of this parameter.