[atlas] follow-up on private discussion regarding management of access to probe measurement data

Hi Vesna, Team,

here is my reminder regarding the suggested "better" granularity to
manage the access to measurement data per probe.

As I see it right now (please feel free to correct me!):

- right now there is an "individual" guardianship per probe(s),
  this guardianship includes configuration access.

- regarding access to the measurement data, the guardian only has two
  option to manage the access privileges - private and public, or simply
  put: white or black.

Now, given that different persons are managing different probes, if I
want to grant access for them, or apply for access to the data of probes
under their control, the only way to accommodate this is to declare the
probe(s) involved "public". That is not necessarily what we want.

Thus I am asking for a sort of "intermediate" or "group" access category.

I can see a couple of ways to help with this, for example by providing
a way to add other user identities to be authorized for (non-config,
i.e. read-only) access.

An alternate approach could be to allow creation of Groups, into which
some probes could be put and which user identities could be added to
for access to the probes in the group.

Of course any other approach would be equally fine with me, I just tried
to come up with a least one idea instead of only asking for added
functionality :-)

Btw, my feeling is that such a facility would be even more useful in
support for the upcoming UDM stuff!


Thanks for reading as far,
Wilfried.