* plugins/gRPC: fix issues with reserved keywords in response data
* Add the path raw file for mock plugin
* Fix panic when special paths is nil
* Add tests for Listing and raw requests from plugins
* Add json.Number case when decoding the status
* Bump the version required for gRPC defaults
* Fix test for gRPC version check
* Use version to determine plugin protocol to use
* Remove field from ServeOpts
* Fix missing assignment, handle errors
* contraint -> constraint
* Inject the version string from the vault side
* Fix the version check
* Add grpc support check to database plugins
* Default to use grpc unless missing env var or fail on contraint check
* Add GRPCSupport test
* Add greater than test case
* Add go-version dep