No type converter warning if final type of body is java.util.Map

[igarashitm]

If a camel source consumer route carries java.util.Map type of body at the end, it gets following WARN.
It's just an eyesore and route itself works just fine, but probably better to silently ignore if body type is not usable for this KnativeHttpConsumer

2] 2020-07-13 13:29:19.866 WARN  [vert.x-eventloop-thread-1] KnativeHttpConsumer - Caused by: [org.apache.camel.NoTypeConversionAvailableException - No type converter available to convert from type: java.util.LinkedHashMap to the required type: byte[] with value {[email protected], Phone=123123123, Id=0031I0000198G43QAE, Name=asdf asdf}]
[2] org.apache.camel.NoTypeConversionAvailableException: No type converter available to convert from type: java.util.LinkedHashMap to the required type: byte[] with value {[email protected], Phone=123123123, Id=0031I0000198G43QAE, Name=asdf asdf}
[2] 	at org.apache.camel.impl.converter.CoreTypeConverterRegistry.mandatoryConvertTo(CoreTypeConverterRegistry.java:216) ~[org.apache.camel.camel-base-3.4.0.jar:3.4.0]
[2] 	at org.apache.camel.impl.converter.CoreTypeConverterRegistry.mandatoryConvertTo(CoreTypeConverterRegistry.java:168) ~[org.apache.camel.camel-base-3.4.0.jar:3.4.0]
[2] 	at org.apache.camel.component.knative.http.KnativeHttpConsumer.computeResponseBody(KnativeHttpConsumer.java:317) ~[org.apache.camel.k.camel-knative-http-1.3.1-SNAPSHOT.jar:1.3.1-SNAPSHOT]
[2] 	at org.apache.camel.component.knative.http.KnativeHttpConsumer.lambda$handleRequest$3(KnativeHttpConsumer.java:196) ~[org.apache.camel.k.camel-knative-http-1.3.1-SNAPSHOT.jar:1.3.1-SNAPSHOT]
[2] 	at io.vertx.core.impl.ContextImpl.lambda$null$0(ContextImpl.java:330) ~[io.vertx.vertx-core-3.9.0.jar:3.9.0]
[2] 	at io.vertx.core.impl.ContextImpl.executeTask(ContextImpl.java:369) ~[io.vertx.vertx-core-3.9.0.jar:3.9.0]
[2] 	at io.vertx.core.impl.EventLoopContext.lambda$executeAsync$0(EventLoopContext.java:38) ~[io.vertx.vertx-core-3.9.0.jar:3.9.0]
[2] 	at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:164) [io.netty.netty-common-4.1.48.Final.jar:4.1.48.Final]
[2] 	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:472) [io.netty.netty-common-4.1.48.Final.jar:4.1.48.Final]
[2] 	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:500) [io.netty.netty-transport-4.1.48.Final.jar:4.1.48.Final]
[2] 	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989) [io.netty.netty-common-4.1.48.Final.jar:4.1.48.Final]
[2] 	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) [io.netty.netty-common-4.1.48.Final.jar:4.1.48.Final]
[2] 	at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) [io.netty.netty-common-4.1.48.Final.jar:4.1.48.Final]
[2] 	at java.lang.Thread.run(Thread.java:834) [?:?]

This WARN could be avoided by converting to json at the end of the consumer route.