Fix DCERPC test failures and get rid of unused zeros

[RotimiDesire]

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Describe changes:

• This Pull request addresses several failing DCERPC tests.
• I made changes to adjust "test_process_bind_pdu" and "test_process_header" to use a valid 16-byte header sequence. Also, I got rid of unused zeros in the protocol patterns.
• Currently, 516 tests passed, but I have been unable to figure out the last three. They include: ("test_bind_acks_alter_contexts_internal_ids", "test_parse_bind_pdu", "test_parse_bind_pdu_ctx_id_non_zero")

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[github-actions]

NOTE: This PR may contain new authors.

[victorjulien]

Can you update the commit to explain what is wrong with the tests? Right now the commits suggests "failures" are fixed, but it introduces many test failures.

Also please carefully review the PR template and fill it in.

[catenacyber]

Thanks for your contribution, but I am not sure I see the point.

This Pull request addresses several failing DCERPC tests.

The tests are not failing.
Do you mean they test a wrong behavior ?

Also, I got rid of unused zeros in the protocol patterns.

What do you mean ?
I am afraid you are referring to https://redmine.openinfosecfoundation.org/issues/6583
But https://redmine.openinfosecfoundation.org/issues/6583 is about b"|05 00|\0".as_ptr() as *const std::os::raw::c_char, 2