SSDM-3510 add explicite declaration of jython 2.7

SVN: 36211

installation/resource/installer/bis-service.properties

@@ -2,4 +2,5 @@
 # This contents of this property file will be merged
 # in the installer distribution at build time.
 #
-database.kind=productive
\ No newline at end of file
+database.kind=productive
+jython-version=2.7

installation/resource/installer/dss-service.properties

@@ -24,3 +24,5 @@ simple-dropbox.incoming-data-completeness-condition = auto-detection
 simple-dropbox.top-level-data-set-handler = ch.systemsx.cisd.etlserver.registrator.JythonTopLevelDataSetHandler
 simple-dropbox.script-path = ${root-dir}/dropboxes/simple-dropbox.py
 simple-dropbox.storage-processor = ch.systemsx.cisd.etlserver.DefaultStorageProcessor
+
+jython-version=2.7