- partition by classifier before reconciling deletable files
NEXUS-5094 - Purging snapshot task should take into account classifier
- clarifying logging statement if there is no classifier
NEXUS-5094 - Purging snapshot task should take into account classifier
Merge branch 'master' into NEXUS-5094_purgeSnapshotWithClassifier

Conflicts:
	nexus-core/src/main/java/org/sonatype/nexus/maven/tasks/DefaultSnapshotRemover.java
add IT to verify results
NEXUS-5094
Merge pull request #838 from sonatype/NEXUS-5094_purgeSnapshotWithClassifier

REVIEW [NEXUS-5094] Purging snapshot task should take into account classifier