Move stages to after main

Move stages to after main

Working with the stages in stdlib, I quickly ran into an issue where
most of the stages were before the main stage.  This made it difficult
to declare any resources in a traditional "include" style class while
hiding the end user from the stages being associated with other module
classes.

For example, in class mcollective, a package would be declared in main.
However, if mcollective declared class mcollective::service in stage
infra_deploy and this was before main, there would be a dependency loop
between the package and the service.

There appears to be a convention around "chain your stages after main"
to avoid the need to create relatively empty shell classes.