Upgrade MySQL JDBC connector for JIRA

cd /root
mkdir tmp
wget https://dev.mysql.com/get/Downloads/Connector-J/mysql-connector-java-5.1.47.tar.gz
tar zxvf mysql-connector-java-5.1.47.tar.gz
cd mysql-connector-java-5.1.47
mv mysql-connector-java-5.1.47-bin.jar /opt/atlassian/jira/atlassian-jira/WEB-INF/lib