Add RDAP metrics for non-search endpoints

This CL uses the previously-defined RDAP metrics class to record basic metrics
for all RDAP endpoints, and handles testing of non-search endpoints. Searches
are more complicated, and will be handled in future CLs.

The default wildcard type is now INVALID rather than NO_WILDCARD.

A change to getMatchingResources() (adding an additional parameter) is also included in this CL, as it was needed to set the incompleteness warning type correctly.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=175719265

java/google/registry/rdap/RdapMetrics.java

@@ -294,7 +294,11 @@ public class RdapMetrics {
     }
 
     static Builder builder() {
-      return new AutoValue_RdapMetrics_RdapMetricInformation.Builder();
+      return new AutoValue_RdapMetrics_RdapMetricInformation.Builder()
+          .setSearchType(SearchType.NONE)
+          .setWildcardType(WildcardType.INVALID)
+          .setPrefixLength(0)
+          .setIncompletenessWarningType(IncompletenessWarningType.COMPLETE);
     }
   }
 }