authentication-2.1.0

What's Changed

• [maven-release-plugin] prepare release authentication-2.1.0 by @openmrs-bot
• Add javadoc plugin to build by @mseaton
• AUT-12 - Add rest session endpoint to default whitelist (#23) by @mseaton
• Fixed Bamboo Specs release-repository checkout. by @Ruhanga
• [maven-release-plugin] prepare for next development iteration by @openmrs-bot