Version 3.2.0 minter migration from Berkeley DB to MySQL

This release migrates the EZID minters from Berkeley DB to MySQL.

Summary of changes:

• created the minter table in MySQL database
• migrated the BDB minters to MySQL
• disabled BDB minters
• modified EZID to interface with the MySQL version minters
• developed integration tests script

Migration Instructions

Migration Instructions

What's Changed

• 87 berkeley db migration by @jsjiang in #479
• Develop by @jsjiang in #514
• remove BDB minters path from config by @jsjiang in #515
• Develop by @jsjiang in #516

Full Changelog: 3.1.11...3.2.0