Add support for v0.11 GRPC services

This also refactors the client GRPC wrapper to dynamically load the
request objects.
All GRPC generated client files now live under lib/grpc_services

lib/grpc_services/verrpc/verrpc_pb.rb

@@ -0,0 +1,27 @@
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: verrpc/verrpc.proto
+
+require 'google/protobuf'
+
+Google::Protobuf::DescriptorPool.generated_pool.build do
+  add_file("verrpc/verrpc.proto", :syntax => :proto3) do
+    add_message "verrpc.VersionRequest" do
+    end
+    add_message "verrpc.Version" do
+      optional :commit, :string, 1
+      optional :commit_hash, :string, 2
+      optional :version, :string, 3
+      optional :app_major, :uint32, 4
+      optional :app_minor, :uint32, 5
+      optional :app_patch, :uint32, 6
+      optional :app_pre_release, :string, 7
+      repeated :build_tags, :string, 8
+      optional :go_version, :string, 9
+    end
+  end
+end
+
+module Verrpc
+  VersionRequest = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("verrpc.VersionRequest").msgclass
+  Version = ::Google::Protobuf::DescriptorPool.generated_pool.lookup("verrpc.Version").msgclass
+end