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/common.proto b/protos/voltha_protos/common.proto
index fb74a30..b6a2000 100644
--- a/protos/voltha_protos/common.proto
+++ b/protos/voltha_protos/common.proto
@@ -1,10 +1,10 @@
 syntax = "proto3";
 
-option go_package = "github.com/opencord/voltha-protos/v2/go/common";
+option go_package = "github.com/opencord/voltha-protos/v3/go/common";
 
 package common;
 
-import "voltha_protos/yang_options.proto";
+option java_package = "org.opencord.voltha";
 
 // Convey a resource identifier
 message ID {
@@ -21,10 +21,8 @@
 }
 
 message LogLevel {
-    option (yang_child_rule) = MOVE_TO_PARENT_LEVEL;
-
     // Logging verbosity level
-    enum LogLevel {
+    enum Types {
         DEBUG = 0;
         INFO = 1;
         WARNING = 2;
@@ -35,7 +33,7 @@
 }
 
 message Logging {
-    common.LogLevel.LogLevel level = 1;
+    common.LogLevel.Types level = 1;
     string package_name = 2;
     string component_name = 3;
 }
@@ -51,10 +49,8 @@
 }
 
 message AdminState {
-    option (yang_child_rule) = MOVE_TO_PARENT_LEVEL;
-
     // Administrative State
-    enum AdminState {
+    enum Types {
 
         // The administrative state of the device is unknown
         UNKNOWN = 0;
@@ -78,10 +74,8 @@
 }
 
 message OperStatus {
-    option (yang_child_rule) = MOVE_TO_PARENT_LEVEL;
-
     // Operational Status
-    enum OperStatus {
+    enum Types {
 
         // The status of the device is unknown at this point
         UNKNOWN = 0;
@@ -104,10 +98,8 @@
 }
 
 message ConnectStatus {
-    option (yang_child_rule) = MOVE_TO_PARENT_LEVEL;
-
     // Connectivity Status
-    enum ConnectStatus {
+    enum Types {
 
         // The device connectivity status is unknown
         UNKNOWN = 0;
@@ -121,8 +113,6 @@
 }
 
 message OperationResp {
-    option (yang_child_rule) = MOVE_TO_PARENT_LEVEL;
-
     enum OperationReturnCode {
         OPERATION_SUCCESS = 0;
         OPERATION_FAILURE = 1;
@@ -133,6 +123,4 @@
 
     // Additional Info
     string additional_info = 2;
-}
-
-
+}
\ No newline at end of file