TUP-2195: Maven build for org.talend.databaseprovider
https://jira.talendforge.org/browse/TUP-2195

move the CheckConnectionHelper.java,
DatabaseUrlCheck.java,Constants.java to utils project from dataprovider
TUP-2195: Maven build for org.talend.databaseprovider
https://jira.talendforge.org/browse/TUP-2195

move the new classes to "database" package
Merge pull request #33 from wwu-talend/maintenance/5.6

Maintenance/5.6