Dynamic catalog: add suffix to service.metadata.providerDisplayName

[gberche-orange]

Expected behavior

• As a osb-client in Openshift

• In order to filter service definition coming from a particular platform

• I need to use the Openshift filter feature to filter service by provider name
  
  

• As an osb-cmdb operator

• In order to modify the service definition provider name on all services

• I need osb-cmdb to be able to modify the provider name e.g. through a template string hardcoded name or prefix {} or {} suffix where {} is replaced by the original backing service provider name

Observed behavior

Only service name suffix are currently supported

Affected release

Reproduced on version 0.9.x

/CC @pdechamboux @poblin-orange