tree 37a38b9af63f8eeced23ea483483de8d579aad8e
parent a064e289436989e27edf8baa58fed9fe69dd2950
author huangtianhua <huangtianhua@huawei.com> 1436404510 +0800
committer huangtianhua <huangtianhua@huawei.com> 1441781557 +0800

Return error message if validate fail when clearing hook

There are some situations:
1. User can run the command "heat hook-clear" on any
resource in the stack, even if there is no hook
defined on it, and no error or warning message is returned.
2. User run the command "heat hook-clear" on resource
to clear the hook which resource unset, and no error or
warning message is returned.
3. User run the command "heat hook-clear" on resource
even if the resource's action is not support to signal, and
no error or warning message is returned.
4. User run the command "heat hook-clear" to clear invalid
hooks, and no error or warnning message is returned.

This patch will check the situations above before call
resource.signal, and will return error messages to user.

Change-Id: Ifb9befad864ebe1bb5f8b419b95d1b3a95530573
Closes-Bug: #1472515