fix ambiguous dates in Changelog.md files

also add an optional call to 'python -m black'

Change-Id: I4e7a83ac4251d794304a1e728e0f2c183bf5e3a2
Signed-off-by: Hansen, Tony (th1395) <th1395@att.com>
Issue-ID: DCAEGEN2-3026
Signed-off-by: Hansen, Tony (th1395) <th1395@att.com>
Issue-ID: DCAEGEN2-2997
Signed-off-by: Hansen, Tony (th1395) <th1395@att.com>
3 files changed