renaming default func to calamari in calamari.py

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
renaming default func to purgedata

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
remove unused module - memoize.py

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
renaming default func to pkg

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
set overrides in cli.py

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
create the override helpers for cephdeploy conf

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
tests for the overrides

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
Merge pull request #176 from alfredodeza/7898

Read conf sections and override flags