matrix group atom初始化
Merge branch 'master' of https://github.com/tddl/tddl

Conflicts:
	tddl-group/src/main/java/com/taobao/tddl/group/jdbc/TGroupConnection.java
	tddl-optimizer/src/main/java/com/taobao/tddl/optimizer/config/table/RepoSchemaManager.java
	tddl-optimizer/src/main/java/com/taobao/tddl/optimizer/rule/RuleSchemaManager.java