maven-metadata.xml

<metadata>
<groupId>com.example.myco</groupId>
<artifactId>myco-artifact</artifactId>
<version>0.0.2-20150909.152320-1</version>
<versioning>
<snapshot>
<timestamp>20150909.152320</timestamp>
<buildNumber>1</buildNumber>
</snapshot>
<lastUpdated>20150909152343</lastUpdated>
<snapshotVersions>
<snapshotVersion>
<extension>pom</extension>
<value>0.0.2-20150909.152320-1</value>
<updated>20150909152320</updated>
</snapshotVersion>
<snapshotVersion>
<extension>zip</extension>
<value>0.0.2-20150909.152320-1</value>
<updated>20150909152320</updated>
</snapshotVersion>
</snapshotVersions>
</versioning>
</metadata>

salt-calls

# This WORKS providing both version and snapshot_version
salt-call artifactory.get_snapshot artifactory_url='http://artifactory.example.com/artifactory' repository='myco-snapshots' artifact_id='myco-artifact' group_id='com.example.myco' packaging='zip' version='0.0.2-SNAPSHOT' snapshot_version='0.0.2-20150909.152320-1'

# This replicates the artifactory.downloaded call and FAILS as it only passes along version not snapshot_version
salt-call artifactory.get_snapshot artifactory_url='http://artifactory.example.com/artifactory' repository='myco-snapshots' artifact_id='myco-artifact' group_id='com.example.myco' packaging='zip' version='0.0.2-SNAPSHOT'

salt-versions-report

           Salt: 2015.5.3
         Python: 2.6.6 (r266:84292, Nov 21 2013, 10:50:32)
         Jinja2: 2.2.1
       M2Crypto: 0.20.2
 msgpack-python: 0.4.6
   msgpack-pure: Not Installed
       pycrypto: 2.0.1
        libnacl: Not Installed
         PyYAML: 3.10
          ioflo: Not Installed
          PyZMQ: 14.5.0
           RAET: Not Installed
            ZMQ: 4.0.5
           Mako: Not Installed
        Tornado: Not Installed

test.sls

myco-artifact:
  artifactory.downloaded:
    artifact:
        artifactory_url: http://artifactory.example.com/artifactory
        repository: 'myco-snapshots'
        artifact_id: 'myco-artifact'
        group_id: 'com.example.myco'
        packaging: 'zip'
        version: '0.0.2'