Move shared code into InstanceTree_getNodeAndAllocationSupplyCellList
  and reuse into CRM and PDM for get the related Allocation Supply.

  This preserve the logic into a single location.

  Include more tests and extend implementation to now support Instance
  Node too.

    Add a daily alarm to verify if all instance allocated have proper Allocation Supply configured and if they
    still respect the SLA.

    Extend SoftwareInstance_getReportedErrorDict to verify SLA, since, in general the context of the report should be the instance tree. The calculation is cheap to assert the SLA, and this script already has specific checks to inform the user about bad approaches.

Do not check deleted root instances

  Now we rely on implementer decorator

   Base_addSlapOSSupportRequest always created a ticket so no reason to invoke Project_createTicketWithCausality anyway.

Floating point arithmetics often lead to unsignificant differences between
expected and computed values (this is the typical example of `0.1 + 0.2 !=
0.3`). Because of this, some tests using `assertEqual` to compare two floats
were failing. The Python method
[`assertAlmostEqual`](https://docs.python.org/2.7/library/unittest.html#unittest
.TestCase.assertAlmostEqual) can prevent these issues by comparing values up to
the seventh decimal place. To find all occurences, two RegExp were ran on all
files of the `tests/` folder: `assertEquals?(\\(.+, [0-9]+\\.[0-9]+\\))` and
`assertEquals?(\\([0-9]+\\.[0-9]+)`.

/cc @xavier_thompson @tomo
/reviewed-by @jerome
/reviewed-on !719

The old `SafeConfigParser` class has been deprecated since Python 3.2, and was
fully dropped in Python 3.11. See issue
[#45173](https://bugs.python.org/issue45173) on Python's bugtracker.

/cc @xavier_thompson who may ping anyone else if needed

slapos_accounting: calculating the outstanding deposit amount need to also check the balance which include the VAT

Test: ensure a second service can be ordered