feat(kafka topic): partitions flag for update

[rkpattnaik780]

User should be able to update number of partitions in a topic. The number of partitions can only increase.

Closes #762

Verification Steps

1. Create a Kafka topic and update its partition count using --partitions flag.

./rhoas kafka topic update rama-topic --partitions 5

2. Partitions can only increase, trying to reduce number of partitions should throw error.
3. Validate the interactive update flow. Try providing values smaller and bigger than current partitions count.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation change
• Other (please specify)

Checklist

• Documentation added for the feature
• CI and all relevant tests are passing
• Code Review completed
• Verified independently by reviewer

[rkpattnaik780]

While updating non-interactive mode for updating partition topic, this is the displayed error:

Should we set the error message in case statuscode.badrequest? But again a bad request can mean many things and not only invalid partitions.

[wtrocki]

Should we set the error message in case statuscode.badrequest? But again a bad request can mean many things and not only invalid partitions.

That would be typically only status code. We need backend to return error codes like kafka and map them properly. If we not getting any info back that can be used to know type of errror I would recomend to:

• Create issue in kafka backend to discuss it
• create issue in cli to adjust error messages/handling when backend support it.

[wtrocki]

I have no means to verify but all changes look good