Introduce a callback for rewriting broker addresses

Use librdkafka's new DNS resolution callback to expose a rust-rdkafka callback for rewriting broker addresses. This allows tunneling of a Kafka connection over SSH or PrivateLink, by rewriting the broker addresses returned during bootstrapping to addresses that will route through the tunnel.
fede1024 · Nov 6, 2022 · 24b071c · 24b071c
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diff --git a/.gitmodules b/.gitmodules
@@ -1,3 +1,3 @@
 [submodule "rdkafka-sys/librdkafka"]
 	path = rdkafka-sys/librdkafka
-	url = https://github.com/edenhill/librdkafka
+	url = https://github.com/MaterializeInc/librdkafka
diff --git a/rdkafka-sys/librdkafka b/rdkafka-sys/librdkafka