This changes (*Config).Merge to merge all fields of a Config.
Previously, when merging Configs, some configuration fields were
ignored and completely lost, including APIAddr, ClusterAddr, and
a couple boolean fields. This only occurs when using multiple config
files and does not affect single config files (even when loading from
a directory -- Merge is only called after a second file is loaded).
- Fix APIAddr not being merged.
- Fix ClusterAddr not being merged.
- Fix DisablePrintableCheck not being merged.
- Fix DisableClustering not being merged. The DisableClusteringRaw
value is also preserved so that it can be used in overrides for
storage fields.
- Use merged top-level config as storage field overrides.
- Update config dir test fixtures to set some fields missed by
(*Config).Merge previously.
* disable raw endpoint by default
* adding docs
* config option raw -> raw_storage_endpoint
* docs updates
* adding listing on raw endpoint
* reworking tests for enabled raw endpoints
* root protecting base raw endpoint