Update generated binapi to v22.02 & makefile changes

This patch does some small updates to the Makefile.
* `make gen-binapi-from-code` is removed, and moves to
`gen-binapi-local`
* `make build` is patched to build cmd & examples
* `make binapi-generator` to build the api-generator
without other binaries, as they typically require its
output to build.
* `make gen-binapi-local` runs the locally built binapi-generator
to update the local bindings. It expects ${VPP_DIR} to be set and
to point to a local vpp repository checked out with the right version
* `make gen-binapi-internal` runs the locally built binapi-generator
to update the bindings in `internal/testbinapi/binapi2001`

Regarding VPP, notable changes when moving to v22.02 are :
- ControlPing moved from vpe to memclnt
- CliInband went from vpe to vlib

Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
Change-Id: Ie5cd2d5ded7ecaffd9abc3ca675df40be272b1fa

1 files changed, 4 insertions, 3 deletions

diff --git a/internal/testbinapi/binapi2001/udp_ping/udp_ping_rpc.ba.go b/internal/testbinapi/binapi2001/udp_ping/udp_ping_rpc.ba.go
index eae0ab4..3b01ff7 100644
--- a/internal/testbinapi/binapi2001/udp_ping/udp_ping_rpc.ba.go
+++ b/internal/testbinapi/binapi2001/udp_ping/udp_ping_rpc.ba.go
@@ -4,10 +4,11 @@ package udp_ping
 
 import (
 	"context"
+
 	api "git.fd.io/govpp.git/api"
 )
 
-// RPCService defines RPC service  udp_ping.
+// RPCService defines RPC service udp_ping.
 type RPCService interface {
 	UDPPingAddDel(ctx context.Context, in *UDPPingAddDel) (*UDPPingAddDelReply, error)
 	UDPPingExport(ctx context.Context, in *UDPPingExport) (*UDPPingExportReply, error)
@@ -27,7 +28,7 @@ func (c *serviceClient) UDPPingAddDel(ctx context.Context, in *UDPPingAddDel) (*
 	if err != nil {
 		return nil, err
 	}
-	return out, nil
+	return out, api.RetvalToVPPApiError(out.Retval)
 }
 
 func (c *serviceClient) UDPPingExport(ctx context.Context, in *UDPPingExport) (*UDPPingExportReply, error) {
@@ -36,5 +37,5 @@ func (c *serviceClient) UDPPingExport(ctx context.Context, in *UDPPingExport) (*
 	if err != nil {
 		return nil, err
 	}
-	return out, nil
+	return out, api.RetvalToVPPApiError(out.Retval)
 }