Allow multiple locations for the test reports from the Liberty Run Tests action

[turkeylurkey]

The Liberty action Run tests calls the dev mode action to run the JUnit tests. In the case of Maven the action may run unit tests and integration tests. Certain versions of the maven-surefire-report-plugin created the test reports in the directory target/site. A recent update to this plugin caused the report to be stored in target/reports. Since we cannot predict which version of the report plugin that dev mode will use the IDE tool must account for either location.

Gradle has only one type of tests and it is not affected by this recent change in Maven.