Update hibernate files to initialize timestamp

Updated the hibernate hbm.xml files to correct the following issues:
1) Timestamps had generated="insert" but hibernate was not auto-populating
	the timestamp value thus the DB was generating an exception.  Modified
	the definition of this field to cause hibernate to provide the default
	value of CURRENT_TIMESTAMP.  This impacted most of the hbm.xml files.
2) While running junit tests, the following message appeared in the log
	underneath most of the hbm.xml files:
		Recognized obsolete hibernate namespace
			http://hibernate.sourceforge.net/. Use namespace
			http://www.hibernate.org/dtd/ instead. Refer to
			Hibernate 3.6 Migration Guide!
	Updated most of the hbm.xml files, changing the namespace per the
	guide.  Note: a couple of the files were already correctly configured.

Change-Id: Id96775b7bd7a42da0c00e208e33aed6fa96ab996
Issue-Id: SO-215
Signed-off-by: Jim Hahn <jrh3@att.com>
diff --git a/mso-catalog-db/src/main/resources/HeatEnvironment.hbm.xml b/mso-catalog-db/src/main/resources/HeatEnvironment.hbm.xml
index 711b73a..b2c94e8 100644
--- a/mso-catalog-db/src/main/resources/HeatEnvironment.hbm.xml
+++ b/mso-catalog-db/src/main/resources/HeatEnvironment.hbm.xml
@@ -20,7 +20,7 @@
   -->
 
 <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
-"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
+"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
 <!-- Generated Aug 6, 2015 1:11:38 PM by Hibernate Tools 3.4.0.CR1 -->
 <hibernate-mapping>
     <class name="org.openecomp.mso.db.catalog.beans.HeatEnvironment" table="HEAT_ENVIRONMENT">
@@ -40,9 +40,9 @@
 		<property name="environment" type="text">
 		      <column name="BODY" not-null="true"/>
 		</property>
-		<property name="created" type="timestamp" generated="insert" insert="false" update="false">
-		    <column name="CREATION_TIMESTAMP" not-null="true"/>
-		</property>
+		<property name="created" type="timestamp" generated="insert" insert="false" update="false" not-null="true">
+          <column name="CREATION_TIMESTAMP" default="CURRENT_TIMESTAMP"/>
+        </property>
 		<property name="artifactChecksum" type="string">
 		  <column name="ARTIFACT_CHECKSUM" length="200" default="'MANUAL RECORD'" not-null="false"/>
 		</property>