update camel_test

External test /camel has updated to mvn wrapper mvnw, which means no need to install default maven. Maven wrapper will specify and installed preferred maven version 3.8.3. Currently all camel tests jdk8, 11, 17 failed.

JDK8: https://ci.adoptopenjdk.net/view/work-in-progress/job/grinder_sandbox_new/537/
error message: `Unrecognized option: --illegal-access=permit Error: Could not create the Java Virtual Machine.`
JDK11: https://ci.adoptopenjdk.net/view/work-in-progress/job/grinder_sandbox_new/536/
error message: `11:05:51 Detected Maven Version: 3.6.3 is not in the allowed range [3.8.1,).`
JDK17: https://ci.adoptopenjdk.net/view/work-in-progress/job/grinder_sandbox_new/536/
error message: `10:58:45 [ERROR] Error executing Maven.`

Update https://github.com/adoptium/aqa-tests/blob/master/external/camel/test.sh to use mvnw instead of mvn will use proper maven. We'd like to see the result with this update.