Modify playbook compiler to flush handlers after each role.

[estheruary]

SUMMARY

A small change that I think will go completely unnoticed by people who don't care but make a big difference by people that do (i.e me).

The problem I run into is having to put awkward logic into roles that are used as dependencies because handlers are run too late.

# In dependent role.
install a new profile into /etc/supervisor.d
register a handler for supervisor to reload its config

# In main role.
start and enable the newly installed profile // error no such process

Yes it's a small annoyance but dammit this is how it should have worked from the beginning. There's a precedent for it too since handlers registered in pre_tasks are called before roles.

ISSUE TYPE

• Feature Pull Request