Consider "socket" drop type an application too
Consider "socket" drop type an application too

This is an old construct from the early days of daliuge (when it was
dfms still). We shouldn't have a specific 'socket' type, only 'app' and
'data' -- so we should also forget about 'plain'.

Signed-off-by: Rodrigo Tobar <bd955c861cbec2e41c0959cf13c7f573fa307e58@icrar.org>

steve-ord/daliuge,steve-ord/daliuge,steve-ord/daliuge,steve-ord/daliuge,steve-ord/daliuge,steve-ord/daliuge,steve-ord/daliuge