[lithium] aaa-authn cannot resolve aaa-authn-api

AAA stable/lithium appears to be failing autorelease due to an unresolvable dependency.

See: https://jenkins.opendaylight.org/releng/job/autorelease-daily-lithium/341/consoleFull

[ERROR] Failed to execute goal on project aaa-authn: Could not resolve dependencies for project org.opendaylight.aaa:aaa-authn:bundle:0.2.3-Daily-v201510210012: Could not find artifact org.opendaylight.aaa:aaa-authn-api:jar:0.2.3-Daily-v201510210012 in opendaylight-mirror (http://nexus.opendaylight.org/content/repositories/public/)