Merge pull request #375 from longnguyen11288/fix_group_id

fixed issue with group id
diff --git a/openstack/compute/v2/extensions/secgroups/requests.go b/openstack/compute/v2/extensions/secgroups/requests.go
index 4292894..8f0a7a0 100644
--- a/openstack/compute/v2/extensions/secgroups/requests.go
+++ b/openstack/compute/v2/extensions/secgroups/requests.go
@@ -216,7 +216,7 @@
 		rule["cidr"] = opts.CIDR
 	}
 	if opts.FromGroupID != "" {
-		rule["from_group_id"] = opts.FromGroupID
+		rule["group_id"] = opts.FromGroupID
 	}
 
 	return map[string]interface{}{"security_group_rule": rule}, nil