[OGC:SOS] Warnings missing from GetCapabilities

[jmckenna@…]

when required metadata is missing no warning is returned by GetCapabilities.

WMS and missing metadata:

<!-- WARNING: Mandatory metadata ... was missing in this context. -->

[assefa]

reassigned.

[tomkralidis]

Jeff/Assefa:

Most required mapfile metadata that is missing for mapogcsos.c will return a service exception because of the way OGC:SOS works, so I think we're okay there.

As for the rest of OGC:SOS GetCapabilities, since mapogcsos.c calls mapowscommon.c for these XML, I've skimmed through OWS Common 1.0.0. Most metadata elements are optional. Only _contactorganization is a required element.

I've put logic in mapowscommon.c to provide a warning for _contactorganization because it's required. Do we want the same for optional OWS Common metadata which is not set in the mapfile? If yes, I will update and commit for all mapfile generated metadata in mapowscommon.c. If no, I will commit the fix for _contactorganization.

Please advise.