AMBARI-11642. Oozie RU prereq is not a default value, need to add Doozie.connection.retry.count=5 (dlysnichenko)

ambari-server/src/main/resources/common-services/OOZIE/5.0.0.2.3/configuration/oozie-env.xml

@@ -136,6 +136,10 @@ export OOZIE_ADMIN_PORT={{oozie_server_admin_port}}
 #
 # export OOZIE_BASE_URL="http://${OOZIE_HTTP_HOSTNAME}:${OOZIE_HTTP_PORT}/oozie"
 export JAVA_LIBRARY_PATH={{hadoop_lib_home}}/native/Linux-amd64-64
+
+# At least 1 minute of retry time to account for server downtime during
+# upgrade/downgrade
+export OOZIE_CLIENT_OPTS="${OOZIE_CLIENT_OPTS} -Doozie.connection.retry.count=5 "
     </value>
   </property>