Added add_header to nginx::resource::location

[chaosmail]

I made add_header available also in location, and added a test for add_header in vhosts

[cyberious]

Any possibility of writing acceptance tests as well for this?

[chaosmail]

Its been 2 years i submitted this PR :) think this is slightly outdated

[wyardley]

@chaosmail @cyberious: Does anyone want to update this and resolve the conflicts? As @chaosmail says, the PR is pretty out of date now.

If there are no more changes or comments in the next month, we may close this for inactivity.

[wyardley]

There was also some discussion in #899 about supporting the 'always' directive. I'm not sure how that would be implemented, would probably have to be a hash with an option of having an array as the hash value. For now, I'm going to close this out (I think people can use the location append / prepend features if necessary), feel free to open a new PR if someone wants to implement this. I think it would be smart to do it as above, though it would probably be a good idea to add the same functionality backwards (in a backwards compatible way) to vhost as well.