PR #227 breaks setting multiple options of same type with location_cfg_append/location_cfg_prepend

[fadenb]

Due to validate_hash used on $location_cfg_append and $location_cfg_prepend introduced in PR #227 it is no longer possible to pass an array.
Passing an array was often used to specify e.g. multiple rewrites. Using a hash containing the same key with different values results in only one of those to be used.

Since PR #222 is not yet merged we lost some important functionality.

[3flex]

@fadenb, sorry for that. Of course we could change that validation to permit an array, but #222 would be the better approach.

Since rspec-tests is the blocker on that PR I'll try to assist in getting that added so it can be merged.