Fix hekad module for 0.4* series hekas

Signed-off-by: Jason Thomas <jason@lithiumfox.com>
Remove hekad package requirement.
Add hekad::instances.
Use template always.
Revert "Use template always."

This reverts commit b7af6006a2a5a33235806ad5a3ce584dd1e30f33.
Modify hekad configuration.
Add support for nginx.
Fix deps.
Use legacy namespace.
Disable multicast.
Remove dupe.
Redirect http traffic for defined https vhosts.
Add nginx::sslserverproxy.
Fixes.