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, 7 insertions, 6 deletions

diff --git a/internal/testbinapi/binapi2001/dns/dns.ba.go b/internal/testbinapi/binapi2001/dns/dns.ba.go
index c7a86e7..f6161df 100644
--- a/internal/testbinapi/binapi2001/dns/dns.ba.go
+++ b/internal/testbinapi/binapi2001/dns/dns.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/plugins/dns.api.json
 
diff --git a/internal/testbinapi/binapi2001/dns/dns_rpc.ba.go b/internal/testbinapi/binapi2001/dns/dns_rpc.ba.go
index 57760ab..deb5be8 100644
--- a/internal/testbinapi/binapi2001/dns/dns_rpc.ba.go
+++ b/internal/testbinapi/binapi2001/dns/dns_rpc.ba.go
@@ -4,10 +4,11 @@ package dns
 
 import (
 	"context"
+
 	api "git.fd.io/govpp.git/api"
 )
 
-// RPCService defines RPC service  dns.
+// RPCService defines RPC service dns.
 type RPCService interface {
 	DNSEnableDisable(ctx context.Context, in *DNSEnableDisable) (*DNSEnableDisableReply, error)
 	DNSNameServerAddDel(ctx context.Context, in *DNSNameServerAddDel) (*DNSNameServerAddDelReply, error)
@@ -29,7 +30,7 @@ func (c *serviceClient) DNSEnableDisable(ctx context.Context, in *DNSEnableDisab
 	if err != nil {
 		return nil, err
 	}
-	return out, nil
+	return out, api.RetvalToVPPApiError(out.Retval)
 }
 
 func (c *serviceClient) DNSNameServerAddDel(ctx context.Context, in *DNSNameServerAddDel) (*DNSNameServerAddDelReply, error) {
@@ -38,7 +39,7 @@ func (c *serviceClient) DNSNameServerAddDel(ctx context.Context, in *DNSNameServ
 	if err != nil {
 		return nil, err
 	}
-	return out, nil
+	return out, api.RetvalToVPPApiError(out.Retval)
 }
 
 func (c *serviceClient) DNSResolveIP(ctx context.Context, in *DNSResolveIP) (*DNSResolveIPReply, error) {
@@ -47,7 +48,7 @@ func (c *serviceClient) DNSResolveIP(ctx context.Context, in *DNSResolveIP) (*DN
 	if err != nil {
 		return nil, err
 	}
-	return out, nil
+	return out, api.RetvalToVPPApiError(out.Retval)
 }
 
 func (c *serviceClient) DNSResolveName(ctx context.Context, in *DNSResolveName) (*DNSResolveNameReply, error) {
@@ -56,5 +57,5 @@ func (c *serviceClient) DNSResolveName(ctx context.Context, in *DNSResolveName)
 	if err != nil {
 		return nil, err
 	}
-	return out, nil
+	return out, api.RetvalToVPPApiError(out.Retval)
 }