Backporting to 3.4.x for CAMEL-15547 Wrong URI with http dsl and quer…

[chandra-h-bitd]

…y parameters

[ ] Make sure there is a JIRA issue filed for the change (usually before you start working on it). Trivial changes like typos do not require a JIRA issue. Your pull request should address just this issue, without pulling in other changes.
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[ ] If you're unsure, you can format the pull request title like [CAMEL-XXX] Fixes bug in camel-file component, where you replace CAMEL-XXX with the appropriate JIRA issue.
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Below are the contribution guidelines:
https://github.com/apache/camel/blob/master/CONTRIBUTING.md

[bedlaj]

I would prefer AvailablePortFinder utility, as port 9999 may be occupied on CI at given time. But lets fix this later, as master version is merged in the same way.