Add netty-codec-base to netty feature to fix OSGi resolution failures

In Netty 4.2.x, io.netty.handler.codec was moved from netty-codec to
the new netty-codec-base artifact. Without it, any feature depending
on io.netty.handler.codec (camel-amqp, camel-netty, camel-cassandraql,
camel-avro-rpc, camel-azure-eventhubs, reactor-netty-core, etc.) fails
feature resolution.

Author: jbonofre

features/src/main/feature/camel-features.xml

@@ -154,6 +154,7 @@
     <feature name="netty" version="${netty-version}">
         <bundle dependency='true'>mvn:io.netty/netty-buffer/${netty-version}</bundle>
         <bundle dependency='true'>mvn:io.netty/netty-common/${netty-version}</bundle>
+        <bundle dependency='true'>mvn:io.netty/netty-codec-base/${netty-version}</bundle>
         <bundle dependency='true'>mvn:io.netty/netty-codec/${netty-version}</bundle>
         <bundle dependency='true'>mvn:io.netty/netty-codec-http/${netty-version}</bundle>
         <bundle dependency='true'>mvn:io.netty/netty-handler/${netty-version}</bundle>