Add 'options' parameters to #tenant

Signed-off-by: Aymeric Brisse <aymeric.brisse@perfect-memory.com>
Support of optional tenants

Signed-off-by: Aymeric Brisse <aymeric.brisse@perfect-memory.com>
Update Gems

Signed-off-by: Aymeric Brisse <aymeric.brisse@perfect-memory.com>
Bump to version 0.2

Signed-off-by: Aymeric Brisse <aymeric.brisse@perfect-memory.com>