add a --local--mirror flag for install

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
centos and debian support for local_mirror

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
clean up imports

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
docs for the new flag

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
add versionadded to clarify availability

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
reuse missing module from centos

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
make fedora reuse more centos install stuff

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
get suse up to speed with local file repos

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>