VOL-1845 : Support for delete device in openolt adapter

           This commit is for the handling of delete device.

           The changes are done to handle the request for delete
           device. This includes the clearing of all data related
           to the device in KV store and reboot of device to reset
           the device.

           This commit has dependency in voltha-go so that needs to
           be merged first. Please refer this review link
           https://gerrit.opencord.org/#/c/15084/

           Updated to dep ensure above voltha-go patch set.  Also typo
           and make lint/sca fixes.

Change-Id: I53f16022c6902d498dad30e9b7d0ff50bf156347
diff --git a/vendor/go.etcd.io/etcd/etcdserver/etcdserverpb/rpc.pb.go b/vendor/go.etcd.io/etcd/etcdserver/etcdserverpb/rpc.pb.go
index 73efc30..199ee62 100644
--- a/vendor/go.etcd.io/etcd/etcdserver/etcdserverpb/rpc.pb.go
+++ b/vendor/go.etcd.io/etcd/etcdserver/etcdserverpb/rpc.pb.go
@@ -4537,7 +4537,7 @@
 	AuthDisable(ctx context.Context, in *AuthDisableRequest, opts ...grpc.CallOption) (*AuthDisableResponse, error)
 	// Authenticate processes an authenticate request.
 	Authenticate(ctx context.Context, in *AuthenticateRequest, opts ...grpc.CallOption) (*AuthenticateResponse, error)
-	// UserAdd adds a new user.
+	// UserAdd adds a new user. User name cannot be empty.
 	UserAdd(ctx context.Context, in *AuthUserAddRequest, opts ...grpc.CallOption) (*AuthUserAddResponse, error)
 	// UserGet gets detailed user information.
 	UserGet(ctx context.Context, in *AuthUserGetRequest, opts ...grpc.CallOption) (*AuthUserGetResponse, error)
@@ -4551,7 +4551,7 @@
 	UserGrantRole(ctx context.Context, in *AuthUserGrantRoleRequest, opts ...grpc.CallOption) (*AuthUserGrantRoleResponse, error)
 	// UserRevokeRole revokes a role of specified user.
 	UserRevokeRole(ctx context.Context, in *AuthUserRevokeRoleRequest, opts ...grpc.CallOption) (*AuthUserRevokeRoleResponse, error)
-	// RoleAdd adds a new role.
+	// RoleAdd adds a new role. Role name cannot be empty.
 	RoleAdd(ctx context.Context, in *AuthRoleAddRequest, opts ...grpc.CallOption) (*AuthRoleAddResponse, error)
 	// RoleGet gets detailed role information.
 	RoleGet(ctx context.Context, in *AuthRoleGetRequest, opts ...grpc.CallOption) (*AuthRoleGetResponse, error)
@@ -4726,7 +4726,7 @@
 	AuthDisable(context.Context, *AuthDisableRequest) (*AuthDisableResponse, error)
 	// Authenticate processes an authenticate request.
 	Authenticate(context.Context, *AuthenticateRequest) (*AuthenticateResponse, error)
-	// UserAdd adds a new user.
+	// UserAdd adds a new user. User name cannot be empty.
 	UserAdd(context.Context, *AuthUserAddRequest) (*AuthUserAddResponse, error)
 	// UserGet gets detailed user information.
 	UserGet(context.Context, *AuthUserGetRequest) (*AuthUserGetResponse, error)
@@ -4740,7 +4740,7 @@
 	UserGrantRole(context.Context, *AuthUserGrantRoleRequest) (*AuthUserGrantRoleResponse, error)
 	// UserRevokeRole revokes a role of specified user.
 	UserRevokeRole(context.Context, *AuthUserRevokeRoleRequest) (*AuthUserRevokeRoleResponse, error)
-	// RoleAdd adds a new role.
+	// RoleAdd adds a new role. Role name cannot be empty.
 	RoleAdd(context.Context, *AuthRoleAddRequest) (*AuthRoleAddResponse, error)
 	// RoleGet gets detailed role information.
 	RoleGet(context.Context, *AuthRoleGetRequest) (*AuthRoleGetResponse, error)
diff --git a/vendor/go.etcd.io/etcd/etcdserver/etcdserverpb/rpc.proto b/vendor/go.etcd.io/etcd/etcdserver/etcdserverpb/rpc.proto
index 565f8fa..423eaba 100644
--- a/vendor/go.etcd.io/etcd/etcdserver/etcdserverpb/rpc.proto
+++ b/vendor/go.etcd.io/etcd/etcdserver/etcdserverpb/rpc.proto
@@ -264,7 +264,7 @@
     };
   }
 
-  // UserAdd adds a new user.
+  // UserAdd adds a new user. User name cannot be empty.
   rpc UserAdd(AuthUserAddRequest) returns (AuthUserAddResponse) {
       option (google.api.http) = {
         post: "/v3/auth/user/add"
@@ -320,7 +320,7 @@
     };
   }
 
-  // RoleAdd adds a new role.
+  // RoleAdd adds a new role. Role name cannot be empty.
   rpc RoleAdd(AuthRoleAddRequest) returns (AuthRoleAddResponse) {
       option (google.api.http) = {
         post: "/v3/auth/role/add"