Make JDBC connection strings passable to sqoop

- Fix a bug in sqoop commands where connection string was not escaped
Fix spec errors pertaining to newly escaped JDBC connection strings
Add specs for JDBC connection string override
Merge branch 'master' of github.com:mortardata/mortar
Fix a bug in local spec due to code editor rules

- Extra end of line space on line 100 was removed by editor
Merge pull request #231 from mbrio/master

Add JDBC connection string override to sqoop methods