Deployment config read as YAML instead of a string

[BuddhiWathsala]

Description:
Currently, the custom object of siddhi operator reads the configurations that need to change at the siddhi runner level using a string as below.

siddhi.runner.configs: |-
    state.persistence:
      enabled: true
      intervalInMin: 1
      revisionsToKeep: 2
      persistenceStore: io.siddhi.distribution.core.persistence.FileSystemPersistenceStore
      config:
        location: siddhi-app-persistence

It is much better to have direct YAML reading instead of this string. In order to enable that YAML reading, we have to read arbitrary YAML in operator level.

In golang, we normally read arbitrary JSON objects using structures like below.

map[string]interface{}

But because of this issue in operator sdk, we are having a problem of reading an arbitrary YAML.

Suggested Labels:
type/improvement

Related Issues:
operator-framework/operator-sdk#1624

[mohanvive]

Check: Read the yaml file as a map and convert it to a YAML string.