Set empty ID on 404 for ip addr (#19)

Author: pablo-ruth

go.sum

@@ -264,6 +264,7 @@ github.com/hashicorp/vault v0.10.4/go.mod h1:KfSyffbKxoVyspOdlaGVjIuwLobi07qD1bA
 github.com/hashicorp/yamux v0.0.0-20180604194846-3520598351bb h1:b5rjCoWHc7eqmAS4/qyk21ZsHyb6Mxv/jykxvNTkU4M=
 github.com/hashicorp/yamux v0.0.0-20180604194846-3520598351bb/go.mod h1:+NfK9FKeTrX5uv1uIXGdwYDTeHna2qgaIlx54MXqjAM=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
+github.com/imdario/mergo v0.3.7 h1:Y+UAYTZ7gDEuOfhxKWy+dvb5dRQ6rJjFSdX2HZY1/gI=
 github.com/imdario/mergo v0.3.7/go.mod h1:2EnlNZ0deacrJVfApfmtdGgDfMuh/nq6Ok1EcJh5FfA=
 github.com/jellevandenhooff/dkim v0.0.0-20150330215556-f50fe3d243e1/go.mod h1:E0B/fFc00Y+Rasa88328GlI/XbtyysCtTHZS8h7IrBU=
 github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=

plugin/providers/phpipam/data_source_phpipam_address.go

@@ -2,6 +2,7 @@ package phpipam
 
 import (
 	"errors"
+	"strings"
 
 	"github.com/Ouest-France/phpipam-sdk-go/controllers/addresses"
 	"github.com/hashicorp/terraform/helper/schema"
@@ -24,6 +25,11 @@ func dataSourcePHPIPAMAddressRead(d *schema.ResourceData, meta interface{}) erro
 	case d.Get("address_id").(int) != 0:
 		out[0], err = c.GetAddressByID(d.Get("address_id").(int))
 		if err != nil {
+			if strings.Contains(err.Error(), "\"code\":404") {
+				// IP not found by id
+				d.SetId("")
+				return nil
+			}
 			return err
 		}
 	case d.Get("ip_address").(string) != "":