use istio client-go library instead of knative (#1661)

use istio client-go library instead of knative
bump kubernetes dependency version
change code coverage to codecov

vendor/github.com/projectcalico/libcalico-go/lib/clientv3/bgpconfig.go

@@ -129,6 +129,20 @@ func (r bgpConfigurations) ValidateDefaultOnlyFields(res *apiv3.BGPConfiguration
 				Reason: "Cannot set ASNumber on a non default BGP Configuration.",
 			})
 		}
+
+		if res.Spec.ServiceExternalIPs != nil && len(res.Spec.ServiceExternalIPs) > 0 {
+			errFields = append(errFields, cerrors.ErroredField{
+				Name:   "BGPConfiguration.Spec.ServiceExternalIPs",
+				Reason: "Cannot set ServiceExternalIPs on a non default BGP Configuration.",
+			})
+		}
+
+		if res.Spec.ServiceClusterIPs != nil && len(res.Spec.ServiceClusterIPs) > 0 {
+			errFields = append(errFields, cerrors.ErroredField{
+				Name:   "BGPConfiguration.Spec.ServiceClusterIPs",
+				Reason: "Cannot set ServiceClusterIPs on a non default BGP Configuration.",
+			})
+		}
 	}
 
 	if len(errFields) > 0 {

vendor/github.com/projectcalico/libcalico-go/lib/clientv3/client.go

@@ -24,10 +24,10 @@ import (
 	"strings"
 	"time"
 
-	"github.com/satori/go.uuid"
+	uuid "github.com/satori/go.uuid"
 
 	"github.com/projectcalico/libcalico-go/lib/apiconfig"
-	"github.com/projectcalico/libcalico-go/lib/apis/v3"
+	v3 "github.com/projectcalico/libcalico-go/lib/apis/v3"
 	"github.com/projectcalico/libcalico-go/lib/backend"
 	bapi "github.com/projectcalico/libcalico-go/lib/backend/api"
 	cerrors "github.com/projectcalico/libcalico-go/lib/errors"

vendor/github.com/projectcalico/libcalico-go/lib/clientv3/node.go

@@ -115,6 +115,32 @@ func (r nodes) Delete(ctx context.Context, name string, opts options.DeleteOptio
 			}
 		}
 	}
+
+	// Add in tunnel addresses if they exist for the node.
+	if n, err := r.client.Nodes().Get(ctx, name, options.GetOptions{}); err != nil {
+		if _, ok := err.(errors.ErrorResourceDoesNotExist); !ok {
+			return nil, err
+		}
+		// Resource does not exist, carry on and clean up as much as we can.
+	} else {
+		if n.Spec.BGP != nil && n.Spec.BGP.IPv4IPIPTunnelAddr != "" {
+			ipAddr, _, err := cnet.ParseCIDROrIP(n.Spec.BGP.IPv4IPIPTunnelAddr)
+			if err == nil {
+				ips = append(ips, *ipAddr)
+			} else {
+				log.WithError(err).Warnf("Failed to parse IPIP tunnel address CIDR: %s", n.Spec.BGP.IPv4IPIPTunnelAddr)
+			}
+		}
+		if n.Spec.IPv4VXLANTunnelAddr != "" {
+			ipAddr, _, err := cnet.ParseCIDROrIP(n.Spec.IPv4VXLANTunnelAddr)
+			if err == nil {
+				ips = append(ips, *ipAddr)
+			} else {
+				log.WithError(err).Warnf("Failed to parse VXLAN tunnel address CIDR: %s", n.Spec.IPv4VXLANTunnelAddr)
+			}
+		}
+	}
+
 	_, err = r.client.IPAM().ReleaseIPs(context.Background(), ips)
 	switch err.(type) {
 	case nil, errors.ErrorResourceDoesNotExist, errors.ErrorOperationNotSupported:

vendor/github.com/projectcalico/libcalico-go/lib/clientv3/resources.go

@@ -20,7 +20,7 @@ import (
 
 	log "github.com/sirupsen/logrus"
 	"k8s.io/apimachinery/pkg/api/meta"
-	"k8s.io/apimachinery/pkg/apis/meta/v1"
+	v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/apimachinery/pkg/runtime/schema"
 	"k8s.io/apimachinery/pkg/util/uuid"