fix: sometimes alloc ipv6 address failed sometimes ipam.GetStaticAdd…

…ress return NoAvailableAddress (#2132)

when use ipam.GetStaticAddress with param ipv6 address without clean Zero
 such as "fd00::00e9:0ed1", and exactly subnet.V6FreeIPList has a range
 with start fd00::e9:ed1 and end with any v6 address,or start with an any v6
 address and end with fd00::e9:ed1, it will cause ipr.Start.Equal(ip)
 or ipr.End.Equal(ip) failed, and no v6 address allocated

pkg/ipam/subnet.go

@@ -332,6 +332,11 @@ func (subnet *Subnet) GetStaticAddress(podName, nicName string, ip IP, mac strin
 	if v4 && !subnet.V4CIDR.Contains(net.ParseIP(string(ip))) {
 		return ip, mac, ErrOutOfRange
 	}
+
+	if v6 {
+		ip = IP(net.ParseIP(string(ip)).String())
+	}
+
 	if v6 && !subnet.V6CIDR.Contains(net.ParseIP(string(ip))) {
 		return ip, mac, ErrOutOfRange
 	}