LMS-2558 implemented and tested

...penbis/dss/generic/server/EncapsulatedOpenBISService.java

...isd/openbis/dss/generic/server/ftp/DSSFileSystemView.java

...x/cisd/openbis/dss/generic/server/ftp/FtpFileFactory.java

...penbis/dss/generic/server/ftp/FtpPathResolverContext.java

...stemsx/cisd/openbis/dss/generic/server/ftp/FtpServer.java

.../cisd/openbis/dss/generic/server/ftp/FtpServerConfig.java

...nbis/dss/generic/server/ftp/resolver/AbstractFtpFile.java

...generic/server/ftp/resolver/FtpFileEvaluationContext.java

.../openbis/dss/generic/server/ftp/resolver/FtpFileImpl.java

...er/ftp/resolver/TemplateBasedDataSetResourceResolver.java

...emsx/cisd/openbis/dss/generic/shared/ServiceProvider.java

datastore_server/source/java/dssApplicationContext.xml

...penbis/dss/generic/server/ftp/FtpServerConfigBuilder.java

...tp/resolver/TemplateBasedDataSetResourceResolverTest.java