If user adds one or more properties to SELF in 'Properties Assignment' and generate csar file,
declared properties are not present in node_types in interface yaml
and this cause parser error because references to the properties cannot be resolved in topology_template.

csar example:
L.140- resource-Sdwansiteresource-template-interface.yml in service-EnhancedService-ok.csar
this is ok case.
org.openecomp.resource.vf.Sdwansiteresource has declared properties as expected.

Then I added a property "myprop" to Sdwansiteresource in Properties Assginment screen.
and download a csar file: service-EnhancedService-notok.csar
around L.140 in resource-Sdwansiteresource-template-interface.yml
"myprop" is added but all other properties are lost.