Add default output base directory for generated sources as compile root folder for maven project
in sal code generator.

Fixes: maven compilation fails with default outputBaseDir option.

Signed-off-by: Maros Marsalek <mmarsale@cisco.com>
Change-Id: Ia6d84079dbb76eac5fcfbd29d93b451c0f7e14f9
Merge "Add default output base directory for generated sources as compile root folder for maven project in sal code generator."