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

2 files changed, 6 insertions, 4 deletions

diff --git a/internal/testbinapi/binapi2001/gso/gso.ba.go b/internal/testbinapi/binapi2001/gso/gso.ba.go
index 374191b..ed33544 100644
--- a/internal/testbinapi/binapi2001/gso/gso.ba.go
+++ b/internal/testbinapi/binapi2001/gso/gso.ba.go
@@ -1,6 +1,6 @@
 // Code generated by GoVPP's binapi-generator. DO NOT EDIT.
 // versions:
-//  binapi-generator: v0.4.0-dev
+//  binapi-generator: v0.5.0-dev
 //  VPP:              20.01
 // source: .vppapi/core/gso.api.json
 
@@ -14,9 +14,10 @@
 package gso
 
 import (
+	"strconv"
+
 	api "git.fd.io/govpp.git/api"
 	codec "git.fd.io/govpp.git/codec"
-	"strconv"
 )
 
 // This is a compile-time assertion to ensure that this generated file
diff --git a/internal/testbinapi/binapi2001/gso/gso_rpc.ba.go b/internal/testbinapi/binapi2001/gso/gso_rpc.ba.go
index d955acc..0d3ed10 100644
--- a/internal/testbinapi/binapi2001/gso/gso_rpc.ba.go
+++ b/internal/testbinapi/binapi2001/gso/gso_rpc.ba.go
@@ -4,10 +4,11 @@ package gso
 
 import (
 	"context"
+
 	api "git.fd.io/govpp.git/api"
 )
 
-// RPCService defines RPC service  gso.
+// RPCService defines RPC service gso.
 type RPCService interface {
 	FeatureGsoEnableDisable(ctx context.Context, in *FeatureGsoEnableDisable) (*FeatureGsoEnableDisableReply, error)
 }
@@ -26,5 +27,5 @@ func (c *serviceClient) FeatureGsoEnableDisable(ctx context.Context, in *Feature
 	if err != nil {
 		return nil, err
 	}
-	return out, nil
+	return out, api.RetvalToVPPApiError(out.Retval)
 }