Add IPMI coldReset command support

* Implement by calling dbus method for coldReset
* Optimize warmReset/coldReset code
* Be implemented with related changes in skeleton repository

Resolves openbmc/openbmc#437

Change-Id: Ia33805c73b5d345419918c467ef7b9cf6fbb246d
Signed-off-by: Nan Li <william.bjlinan@hotmail.com>
2 files changed