[FEATURE]: limit output of buildtest report

[shahzebsiddiqui]

Please describe your feature request

The buildtest report command will show all test results and the output can be quite long so for this feature we would like to limit the output by limiting the number of rows that get printed.

We can have an option buildtest report --count=<INT> where --count expects a positive integer that limits the query to X number of rows.

• Add arg parse argument
• Add implementation
• Add bash completion
• Add regression test
• Add documentation
• Add help config section

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