[COOK-3792] Set 1 hour timeout for SQL Server installer to run

I observed installation failures due to a timeout. It seems that Chef "execute" resources have a default timeout of 10 minutes, and a command that takes longer than the timeout is aborted. Ten minutes to install a package as big as SQL Server is not going to be reliable, so this commit sets the timeout for the installation command to be 1 hour.

See: https://tickets.opscode.com/browse/COOK-3792