jobs/template/debian: Split ascii strings chunk of less than 65k
Because build fails otherwise... [1]
17:40:10 org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed: 17:40:10 WorkflowScript: 237: String too long. The given string is 188459 Unicode code units long, but only a maximum of 65535 is allowed.
¯\_(ツ)_/¯