Don't explicitly set sources in Servlet environment
Don't explicitly set sources in Servlet environment

The current class inheriting `SpringBootServletInitializer` will be used
as application sources, if none is defined.

tkrille/osiam-osiam,fwilhe/osiam,osiam/osiam,fwilhe/osiam,osiam/osiam,tkrille/osiam-osiam,fwilhe/osiam,osiam/osiam,tkrille/osiam-osiam