Generalise eo3-compatible product handling in materialised view definition (#996)

* Generalise eo3-compatible product handling in materialised view definition.

* Remove accidental whitespace.

* Fix WMTS issue exposed by stricter WMTS validation in newer versions of OWSLib.

Author: SpacemanPaul

datacube_ows/sql/extent_views/create/011_create_new_space_view_raw.sql

@@ -96,5 +96,5 @@ select id,
         4326
       ) as spatial_extent
  from agdc.dataset where
-        metadata_type_ref in (select id from metadata_lookup where name in ('eo3_landsat_ard', 'eo3_sentinel_ard'))
+        metadata_type_ref in (select id from metadata_lookup where name like 'eo3_%')
         and archived is null

datacube_ows/templates/wmts_capabilities.xml

@@ -162,6 +162,7 @@
                     {% for t in product_ranges.times %}
                         <Value>{{ t }}</Value>
                     {% endfor %}
+                    <Default>{{ product_ranges.times[-1] }}</Default>
                 </Dimension>
             {% endif %}