fix: Make sure to use current pid to verify Camel app status

[christophd]

• Auto adjust the pid that identifies the running Camel JBang application
• Camel JBang pid may change on Unix OS due to descendant process being launched
• Racing conditions may lead to parent pid being stored in test context
• Make sure to also search for descendant process ids when verifying the Camel integration app status

[gansheer]

I still have the same issue:

2024-12-19 09:41:48.287|INFO |main|CamelRunIntegrationAction - Starting Camel integration 'hello-yaml' ...
2024-12-19 09:41:48.289|INFO |main|ProcessAndOutput - Checking process with pid 39409, app route.yaml and command Optional[/usr/bin/bash -c jbang -Dgreeting="Hello Camel" camel@apache/camel run --name hello-yaml --verbose /home/user1/work/sources/gansheer/citrus/endpoints/citrus-camel/target/test-classes/org/citrusframework/camel/integration/route.yaml].
2024-12-19 09:41:48.289|INFO |main|ProcessAndOutput - Checking process with pid 39409, app route.yaml and command Optional[/usr/bin/bash -c jbang -Dgreeting="Hello Camel" camel@apache/camel run --name hello-yaml --verbose /home/user1/work/sources/gansheer/citrus/endpoints/citrus-camel/target/test-classes/org/citrusframework/camel/integration/route.yaml].
2024-12-19 09:41:48.420|INFO |main|ProcessAndOutput - Checking descendant process with pid 39418, app route.yaml and command Optional[/usr/lib/jvm/java-21-openjdk-21.0.5.0.11-1.fc41.x86_64/bin/java -classpath /home/user1/.jbang/bin/jbang.jar dev.jbang.Main -Dgreeting=Hello Camel camel@apache/camel run --name hello-yaml --verbose /home/user1/work/sources/gansheer/citrus/endpoints/citrus-camel/target/test-classes/org/citrusframework/camel/integration/route.yaml].
2024-12-19 09:41:48.421|INFO |main|CamelRunIntegrationAction - CamelRunIntegrationAction pid 39418.

We end up having the wrong pid set in the context that raise the following error in the Verify action:
[ERROR] shouldLoadCamelActions(org.citrusframework.camel.yaml.JBangTest) Time elapsed: 20.058 s <<< FAILURE! org.citrusframework.exceptions.TestCaseFailedException: Unknown variable 'hello-yaml:process:39409