Tell us about the problem you're trying to solve

We currently do inheritance-like things in our OpenApi configuration. The library we use to generate java from that configuration produces the following warning:

[deprecated] inheritance without use of 'discriminator.propertyName' is deprecated and will be removed in a future release. Generating model for null

Example of the [line]

Current behavior:
All the SQL activities either don't support Insert or are specific to a usecase

Expected behavior:
to be able to insert to a sql database in an activity

What is the motivation / use case for changing the behavior?
many workflows/pipelines require logging to a database

Additional information you deem important (e.g. I need this tomorrow):

The operator prints periodically this info:

{"level":"info","ts":1623416979.434832,"logger":"camel-k","msg":"could not find any knative type in namespace camel, last error was: services.serving.knative.dev is forbidden: User \"system:serviceaccount:camel:camel-k-operator\" cannot list resource \"services\" in API group \"serving.knative.dev\" in the namespace \"camel\""}

It looks l

Is your feature request related to a problem? If yes, please describe the problem.
Currently our playground is without any code sharing capabilities.

Describe the solution you'd like to see.
Allow to share the playground with a certain query by adding the query as a base64 in the URL.

Were you inspired by anything else, that you have experienced?
Inspired by https://sandcastle