Instead of using the PHOBOS_STORE_default_family env variable, users
can now indicate to which family they send their data using
the '-f' option of put/mput commands.

Change-Id: Ib7a1278b485bdfc17eab9633316def61c0661c91
Signed-off-by: Sebastien Gougeaud <sebastien.gougeaud@cea.fr>
Reviewed-on: https://cws-fleury.labs.ocre.cea.fr/gerrit/6660


Reviewed-by: Quentin Bouget <quentin.bouget@cea.fr>
Reviewed-by: Linter
Tested-by: Jenkins s8open_nr <s8open_nr@ccc.ocre.cea.fr>
Reviewed-by: Thomas Leibovici <thomas.leibovici@cea.fr>