Use ini package for config file parsing #297
Merged
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This PR swaps out configparser in favour of gopkg.in/ini.v1
The swap is mostly like for like and I have not made an attempt at refactoring our parsing logic in this PR.
The benefit gained from this swap is that comments are now supported in configuration files.
When performing write operations, Granted will no longer remove comments from the configuration files!
The ini package makes it simple to write tests where we define the config files using a string rather than reading and writing to the filesystem