Services.properties value for metadata-providers in default file from install

[Tom Zeller]

>>    I've wondered for awhile, but never got around to asking before. Why does the "out of
>> the box" version of the v3 (at least the v3.2.1 version) services.properties file have the
>> default "0 duration time (PT0S)" for the metadata-providers.xml file
>>(shibboleth.MetadataResolverResources), while it has explicit settings of 15 minutes or 5
>> minutes for almost all the other "likely to be changed" config files? Just an oversight,
>> or is there some key reason why the team thought that a better out-of-the-box setting for
>> that one file?
>
> I asked that a while ago (may have asked only in private), and I don't think anybody had an answer. My guess is it was a mistake and I can't think of any reason I would have done it.

Here's my notes from a 2016-07-06 TIER call : "changing metadata on
the file can be unsafe because it potentially changes the attribute
env".

FWIW Metadata providers (like the file system one) which extend
AbstractReloadingMetadataResolver reload/refresh by default. So they
_are_ reloading anyway, by default.