Fix time format used for cloud orchestration

The format used to represent time is slightly different than RFC
standard and the one present in golang time lib.
diff --git a/openstack/orchestration/v1/stackevents/fixtures.go b/openstack/orchestration/v1/stackevents/fixtures.go
index 016ae00..235787a 100644
--- a/openstack/orchestration/v1/stackevents/fixtures.go
+++ b/openstack/orchestration/v1/stackevents/fixtures.go
@@ -67,7 +67,7 @@
   "events": [
   {
     "resource_name": "hello_world",
-    "event_time": "2015-02-05T21:33:11Z",
+    "event_time": "2015-02-05T21:33:11",
     "links": [
     {
       "href": "http://166.78.160.107:8004/v1/98606384f58d4ad0b3db7d0d779549ac/stacks/postman_stack/5f57cff9-93fc-424e-9f78-df0515e7f48b/resources/hello_world/events/06feb26f-9298-4a9b-8749-9d770e5d577a",
@@ -90,7 +90,7 @@
     },
     {
       "resource_name": "hello_world",
-      "event_time": "2015-02-05T21:33:27Z",
+      "event_time": "2015-02-05T21:33:27",
       "links": [
       {
         "href": "http://166.78.160.107:8004/v1/98606384f58d4ad0b3db7d0d779549ac/stacks/postman_stack/5f57cff9-93fc-424e-9f78-df0515e7f48b/resources/hello_world/events/93940999-7d40-44ae-8de4-19624e7b8d18",
@@ -184,7 +184,7 @@
   "events": [
   {
     "resource_name": "hello_world",
-    "event_time": "2015-02-05T21:33:11Z",
+    "event_time": "2015-02-05T21:33:11",
     "links": [
     {
       "href": "http://166.78.160.107:8004/v1/98606384f58d4ad0b3db7d0d779549ac/stacks/postman_stack/5f57cff9-93fc-424e-9f78-df0515e7f48b/resources/hello_world/events/06feb26f-9298-4a9b-8749-9d770e5d577a",
@@ -207,7 +207,7 @@
     },
     {
       "resource_name": "hello_world",
-      "event_time": "2015-02-05T21:33:27Z",
+      "event_time": "2015-02-05T21:33:27",
       "links": [
       {
         "href": "http://166.78.160.107:8004/v1/98606384f58d4ad0b3db7d0d779549ac/stacks/postman_stack/5f57cff9-93fc-424e-9f78-df0515e7f48b/resources/hello_world/events/93940999-7d40-44ae-8de4-19624e7b8d18",
@@ -309,7 +309,7 @@
   "events": [
   {
     "resource_name": "hello_world",
-    "event_time": "2015-02-05T21:33:11Z",
+    "event_time": "2015-02-05T21:33:11",
     "links": [
     {
       "href": "http://166.78.160.107:8004/v1/98606384f58d4ad0b3db7d0d779549ac/stacks/postman_stack/5f57cff9-93fc-424e-9f78-df0515e7f48b/resources/hello_world/events/06feb26f-9298-4a9b-8749-9d770e5d577a",
@@ -332,7 +332,7 @@
     },
     {
       "resource_name": "hello_world",
-      "event_time": "2015-02-05T21:33:27Z",
+      "event_time": "2015-02-05T21:33:27",
       "links": [
       {
         "href": "http://166.78.160.107:8004/v1/98606384f58d4ad0b3db7d0d779549ac/stacks/postman_stack/5f57cff9-93fc-424e-9f78-df0515e7f48b/resources/hello_world/events/93940999-7d40-44ae-8de4-19624e7b8d18",
@@ -408,7 +408,7 @@
 {
   "event":{
     "resource_name": "hello_world",
-    "event_time": "2015-02-05T21:33:27Z",
+    "event_time": "2015-02-05T21:33:27",
     "links": [
     {
       "href": "http://166.78.160.107:8004/v1/98606384f58d4ad0b3db7d0d779549ac/stacks/postman_stack/5f57cff9-93fc-424e-9f78-df0515e7f48b/resources/hello_world/events/93940999-7d40-44ae-8de4-19624e7b8d18",
diff --git a/openstack/orchestration/v1/stackevents/results.go b/openstack/orchestration/v1/stackevents/results.go
index 3c8f1da..cf9e240 100644
--- a/openstack/orchestration/v1/stackevents/results.go
+++ b/openstack/orchestration/v1/stackevents/results.go
@@ -57,7 +57,7 @@
 	for i, eventRaw := range events {
 		event := eventRaw.(map[string]interface{})
 		if date, ok := event["event_time"]; ok && date != nil {
-			t, err := time.Parse(time.RFC3339, date.(string))
+			t, err := time.Parse(gophercloud.STACK_TIME_FMT, date.(string))
 			if err != nil {
 				return nil, err
 			}
@@ -121,7 +121,7 @@
 	for i, eventRaw := range events {
 		event := eventRaw.(map[string]interface{})
 		if date, ok := event["event_time"]; ok && date != nil {
-			t, err := time.Parse(time.RFC3339, date.(string))
+			t, err := time.Parse(gophercloud.STACK_TIME_FMT, date.(string))
 			if err != nil {
 				return nil, err
 			}
@@ -161,7 +161,7 @@
 	event := r.Body.(map[string]interface{})["event"].(map[string]interface{})
 
 	if date, ok := event["event_time"]; ok && date != nil {
-		t, err := time.Parse(time.RFC3339, date.(string))
+		t, err := time.Parse(gophercloud.STACK_TIME_FMT, date.(string))
 		if err != nil {
 			return nil, err
 		}