When generating csiconfiguration from values the config.json key gets merged with cluster-mapping.json
as the config.json toYaml element supresses a newline.
This fixes the situation where configuration is generated as shown;
```
data:
config.json: |-
[{"clusterID":"....","monitors":["..."]}]cluster-mapping.json: |-
[]
```
Signed-off-by: Toby Jackson <toby@warmfusion.co.uk>
