Fix pinning version

When pinning version, an action of package resource should be :install.

http://docs.opscode.com/resource_package.html#actions
> :install  Default. Use to install a package. If a version is specified,
>           use to install the specified version of a package.
> :upgrade  Use to install a package and/or to ensure that a package
>           is the latest version.
Install a specific version if pinning version enabled, otherwise install the latest version
Merge pull request #26 from abe4tawa8/fix-pinning-version

Fix pinning version to use correct package action