debian/update-helper-*: packaging update helpers

debian/update-helper-*: packaging update helpers

* Add update-helper-control.py script to easen rename packages for new
  DPDK versions.
  - This script from libboost helps convert all package names
    from the old ABI name to the new one.
  - thanks to Jan Blunck for the conversion from boost!
  - the script was later updated to be python3 ready and fixing the script
    for all warnings/errors (but not all info) thrown by python code checkers.
* Add update-helper-symbols.sh script to easen modifying the package and
  soname references in symbols files for new DPDK versions.
  - We still want to check "real" symbol delta on any update, but to make
    dpkg-gensymbols find the new libs the symbols files need to be updated.

Change-Id: I73a454b8fe628c05569e689f5c14f3b73d2ec4cc
Signed-off-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>