Microcks gRPC mocks

[hguerrero]

When mocking gRPC, Microcks lets you add mocks with postman collections.

1. Do we need to always add the .metadata file? It looks like it works without, but it always returns the same value, no matter the payload.
2. Considering that you don't send the expected payload, what is the algorithm to return the mock? Is it the first item on the list? Or how does Microcks determine what to return?

[lbroudoux]

Hey @hguerrero!

1. Metadata file is no longer mandatory for a functional gRPC mock as we now have implemented Allow empty / null dispatcher on GRPC calls #955 (support for empty / null dispatcher for gRPC).

2. Without dispatcher being specified, the mock just return the first item (response) in the list