Initial Test Harness Commit

Added initial test harness to SmokePing Cookbook.

Need to add integration tests as well as ensure cookbook works with ubuntu12.04 as well as
CentOS6.4.

As well as potential cookbook updates for completeness, may be needed.

Signed-off-by: "Jake Champlin" <jake.champlin.27@gmail.com>
Added Sendmail. Set Example Kitchen.yml Attr Data

Added example .kitchen.yml data for attributes so test kitchen would run successfully.

Also removed CentOS6.4 from list of platforms until it is officially supported.

Signed-off-by: "Jake Champlin" <jake.champlin.27@gmail.com>