Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 0e2cda138f35ee6a7a8a54c29a6c4edf07d51745
  - update bpmn to save extsystemerrorsource
    
    Added ext error source to workflow exception
    Updated all lines that create this exception with source
    Added unit tests and updated existing ones
    
    Change-Id: Id9b3b1e6e24368224214a6370ea2d450ae667bfb
    Issue-ID: SO-2092
    Signed-off-by: Benjamin, Max (mb388a) <mb388a@us.att.com>
    
1 file changed