Update git submodules

* Update docs/submodules/dcaegen2.git from branch 'master'
  to eec78e919705108f867ff9e68fe8017d88247b38
  - Merge "Add datalake deployment guide."
  - Add datalake deployment guide.
    
    Issue-ID: DCAEGEN2-2028
    Signed-off-by: Kate Hsuan <kate.hsuan@qct.io>
    Change-Id: I882ad3e9b33f03fe7df98b8cc89c507fbd8062e6
    
1 file changed