Add jpa result-set-mapping for IngestSummary

ace-am/src/main/resources/META-INF/orm.xml

+<?xml version="1.0"?>
+<entity-mappings
+        xmlns="http://www.eclipse.org/eclipselink/xsds/persistence/orm"
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:schemaLocation="http://www.eclipse.org/eclipselink/xsds/persistence/orm http://www.eclipse.org/eclipselink/xsds/eclipselink_orm_2_1.xsd"
+        version="2.1">
+
+    <sql-result-set-mapping name="IngestSummaryMapping">
+        <constructor-result target-class="edu.umiacs.ace.stats.IngestSummary">
+            <column name="date"/>
+            <column name="name"/>
+            <column name="colgroup"/>
+            <column name="count"/>
+            <column name="size"/>
+        </constructor-result>
+    </sql-result-set-mapping>
+
+</entity-mappings>
+