Update for a change in SIS internal API.

Author: desruisseaux

geotk-observation-store/src/main/java/org/geotoolkit/observation/OMUtils.java

@@ -35,8 +35,8 @@
 import org.apache.sis.geometry.Envelopes;
 import org.apache.sis.geometry.wrapper.Geometries;
 import org.apache.sis.geometry.wrapper.GeometryWrapper;
-import org.apache.sis.metadata.internal.RecordSchemaSIS;
-import static org.apache.sis.metadata.internal.RecordSchemaSIS.INSTANCE;
+import org.apache.sis.metadata.privy.RecordSchemaSIS;
+import static org.apache.sis.metadata.privy.RecordSchemaSIS.INSTANCE;
 import org.apache.sis.measure.Units;
 import org.apache.sis.metadata.ModifiableMetadata;
 import org.apache.sis.metadata.iso.DefaultIdentifier;