[f] refactor production / staging servers

[Dan MacNeil]

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   affects mvhub
   tag sysadmin refactor
   assignee leegoodrich
   done

The "Real" assignee is smk, but he doesn't have launchpad account yet.

Task is done when:

  1) staging and production apache vritual servers
     share their own xen guest OS that is not used
     for development

   2) staging and production don't need mod_macro
      or mpm-itk

   3) procedure for moving from development to
       staging to production is updated.
Goals:
  1) simplify future packaging
  2) speed
  3) security / reliability

Related tasks/projects:

  1) script to generate duplicate config
     (apache / env vars setup) from central
     config

  2) smoke test **apache** virtual server

  3) creating .deb
     move to staging/production could become
     sudo aptitude update

Right now, each developer has their own virtual server. All this is
managed with mod mpm-itk and mod_macro. mpm-itk runs each virtual server
as the UID of the developer mod_macro avoids a separate config file for
each developer.

The production and staging servers have the same setup on the same
machine. This is less secure and (theoretically) less reliable as a
development glitch could (theoretically) screw up production.

When we package for debian/ubuntu, it is possibly unreasonable to
require the complexity/flexibility of mod_macro and mpm-itk

mpm-itk imposes about a 30% to 100% speed hit.

The current setup doesn't permit developers to reboot their (apache)
virtual servers at will.

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