Import detekt issue, file not found should fail sonnar-scanner

INFO: Sensor Import of detekt issues [kotlin]
ERROR: No issue information will be saved as the report file '/home/travis/build/robstoll/niok/build/detekt/detekt-checkstyle.xml' can't be read.

More details see: https://travis-ci.org/robstoll/niok/jobs/655686407#L645

The sonar-scanner should fail in such a case

potential workaround:
add a flag if failing the sonar-scanner cannot be the default

Hi,

Our policy is to not fail the analysis, but I created a ticket https://jira.sonarsource.com/browse/SONARSLANG-479, it will allow to see this problem in UI of SQ as a warning.