* Switch to using include directive for Nginx constants
* remove deprecated comment
* give better error message when attempting to insert an existing directive
* make code more readable
* add docstrings
* allow a duplicated directive if it's identical
* comment out precisely repeated directives
* add comments
* rewrite nginx parser to allow everything that nginx does
* also make changes in tls_sni_01.py
* add test case with
* allow embedded variables
* allow empty ${} variable
* fix quotes
* un-special case if
* update all tests to reflect current parsing
* escape in QuotedString after merge
* add test cases for variable weirdness that are almost certainly nginx bugs
* update regex for correct variable rules
* close paren doesn't invoke last_space
* Make test file valid Nginx syntax
* Move parse_server to be a method of NginxParser
* add super equal method to more correctly check addr equality in nginx should we support ipv6 in nginx in the future
* add addr:normalized_tuple method
* mark addresses listening sslishly due to another server block listening sslishly on that address
* test turning on ssl globally
* add docstring
* lint and remove extra file
* Cache the vhost we find during nginx deployment for OCSP enhancement.
* Refactor to pass domain into enhancement functions
* Add https redirect to most name-matching block listening non-sslishly.
* Redirect enhancement chooses the vhost most closely matching target_name that is listening to port 80 without using ssl.
* Add default listen 80 directive when it is implicitly defined
* Restructure add_server_directives to take a vhost as argument. This is the first step towards fixing vhost selection in nginx.
* Save path to vhost in file while parsing in get_vhosts().
* Disable creating a new server block when no names match.
* Make parser select vhost based on information in the vhost it found previously, rather than searching again for a match.
* Make add_server_directives update the passed vhost
* Update boulder config to pass test
* Add testing code for the _do_for_subarray function
* documentation and formatting updates
