Plone.recipe.varnish

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- re-release: 2.0a2 was a brown bag release
[jensens]

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- Fix daemon location of script part of the recipe (/usr/bin/varnishd was
always used.
[fredvd]

- Fix tests, download Varnish 4.0.3 as download.
[fredvd]

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- refactoring and cleanup of the whole recipe and vcl generation:

- skip support of varnish < v4.0, use 1.x series for older varnish support.
- do not generate vcl code in python
- use jinja2 templates for vcl
- refactor vcl generation out in own testable class
- change fixup cookies into a cookie whitelist
- split up recipe in 3 parts: build, configuration generation and script
generation.

[jensens]

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- Fix test for running in the Varnish 2 or later.
[cleberjsantos]

- Fixup VCL template Varnish 3.
[cleberjsantos]

- add saint-mode for varnish_version 3.
[cleder, cleberjsantos]

- set a default download-url for varnish_version 3.
[cleder]

- Fixup string concat for varnish_version 3.
[damaestro]

- Add zope2_vhm_port to be able to explicitly define a response
port in VHM URLs.
[damaestro]

- Add zope2_vhm_ssl to use VHM to render https urls.
[damaestro]

- Add zope2_vhm_ssl_port to be able to explicitly define a response
port in VHM URLs for ssl.
[damaestro]

- Update verbose-headers to use upstream debug example:
https://www.varnish-cache.org/trac/wiki/VCLExampleHitMissHeader
[damaestro]

- Add cookie-fixup to better support caching of plone conent
and to ensure no authenticated content gets cached.
http://developer.plone.org/hosting/varnish.html
[damaestro]

- Update VCL templates to be more flexible.
[damaestro]

----------------

- Add varnish_version option in order to control vcl generation for
varnish version >= 3
[rnix]

------------------

- Moved to https://github.com/collective/plone.recipe.varnish
[maurits]