Brokered service binding metadata propagation to broker (as x-osb-cmdb binding params)

[gberche-orange]

Expected behavior

As a service broker author

• in order to get access to brokered service binding metadata (i.e. context, bind_resource, parameters)
• I need osb-cmdb to propagate them in the received OSB calls (e.g. in an x-osb-cmdb param or similar wording see Developer friend field naming for x-osb-cmdb #100 )

Observed behavior

As of v1.4.0, only brokered binding params are propagated in the backing binding params

Affected release

Reproduced on version 1.4.0