VOL-1643 Unsuitable attribute names are renamed for gRPC Java support

- proto files are modified to support compilation of generated Java code
- schema.proto and yang_options.proto files are deleted since there is no need for netconf in Voltha.
Change-Id: I6d8796d74a284529e5bc5926762e77ceaa31638b
diff --git a/protos/voltha_protos/inter_container.proto b/protos/voltha_protos/inter_container.proto
index eb9c008..f69be88 100644
--- a/protos/voltha_protos/inter_container.proto
+++ b/protos/voltha_protos/inter_container.proto
@@ -1,6 +1,7 @@
 syntax = "proto3";
 
-option go_package = "github.com/opencord/voltha-protos/v2/go/inter_container";
+option go_package = "github.com/opencord/voltha-protos/v3/go/inter_container";
+option java_package = "org.opencord.voltha";
 
 import public "voltha_protos/common.proto";
 import public "voltha_protos/voltha.proto";
@@ -119,7 +120,7 @@
 
 message InterAdapterOmciMessage {
     bytes message = 1; // OMCI_REQUEST or OMCI_RESPONSE
-    common.ConnectStatus.ConnectStatus connect_status = 2;
+    common.ConnectStatus.Types connect_status = 2;
     voltha.Device.ProxyAddress proxy_address = 3;
 }