Refactor OpenStack services to use default OkCodes
diff --git a/openstack/objectstorage/v1/accounts/requests.go b/openstack/objectstorage/v1/accounts/requests.go
index 3e404c3..a645115 100644
--- a/openstack/objectstorage/v1/accounts/requests.go
+++ b/openstack/objectstorage/v1/accounts/requests.go
@@ -95,7 +95,7 @@
 
 	resp, err := c.Request("POST", updateURL(c), gophercloud.RequestOpts{
 		MoreHeaders: h,
-		OkCodes:     []int{204},
+		OkCodes:     []int{201, 202, 204},
 	})
 	res.Header = resp.Header
 	res.Err = err
diff --git a/openstack/objectstorage/v1/containers/requests.go b/openstack/objectstorage/v1/containers/requests.go
index a29d7da..39dd4d3 100644
--- a/openstack/objectstorage/v1/containers/requests.go
+++ b/openstack/objectstorage/v1/containers/requests.go
@@ -122,9 +122,7 @@
 // Delete is a function that deletes a container.
 func Delete(c *gophercloud.ServiceClient, containerName string) DeleteResult {
 	var res DeleteResult
-	_, res.Err = c.Request("DELETE", deleteURL(c, containerName), gophercloud.RequestOpts{
-		OkCodes: []int{202, 204},
-	})
+	_, res.Err = c.Request("DELETE", deleteURL(c, containerName), gophercloud.RequestOpts{})
 	return res
 }
 
@@ -180,7 +178,7 @@
 
 	resp, err := c.Request("POST", updateURL(c, containerName), gophercloud.RequestOpts{
 		MoreHeaders: h,
-		OkCodes:     []int{202, 204},
+		OkCodes:     []int{201, 202, 204},
 	})
 	res.Header = resp.Header
 	res.Err = err
diff --git a/openstack/objectstorage/v1/objects/requests.go b/openstack/objectstorage/v1/objects/requests.go
index 30ea94c..b69b8dd 100644
--- a/openstack/objectstorage/v1/objects/requests.go
+++ b/openstack/objectstorage/v1/objects/requests.go
@@ -211,7 +211,6 @@
 	ropts := gophercloud.RequestOpts{
 		RawBody:     content,
 		MoreHeaders: h,
-		OkCodes:     []int{201, 202},
 	}
 
 	resp, err := c.Request("PUT", url, ropts)
@@ -310,9 +309,7 @@
 		url += query
 	}
 
-	resp, err := c.Request("DELETE", url, gophercloud.RequestOpts{
-		OkCodes: []int{204},
-	})
+	resp, err := c.Request("DELETE", url, gophercloud.RequestOpts{})
 	res.Header = resp.Header
 	res.Err = err
 	return res
@@ -412,7 +409,6 @@
 	url := updateURL(c, containerName, objectName)
 	resp, err := c.Request("POST", url, gophercloud.RequestOpts{
 		MoreHeaders: h,
-		OkCodes:     []int{202},
 	})
 	res.Header = resp.Header
 	res.Err = err