Simplify operator prerequisites

[ruromero]

Currently the operator requires the creation of configmaps containing the BIAN openapi specs and camel-k integrations.

In order to simplify version upgrades and installations, these configmaps should be managed by the operator

[ilan-pinto]

@ruromero could you add the ADR?

[ruromero]

https://docs.google.com/document/d/1ajQtiGBXPsEWlPl5zXCaT9OVpCoa8o-jdAwiBMxS-vE/edit#