Debian: Sysinv can't import python plugins

[Dan Voiculeasa]

Brief Description
-----------------
Sysinv logic is based on the fact that the source files are listed in a file included in the egg.
This is missing on Debian.

Severity
--------
Critical: System/Feature is not usable due to the defect

Steps to Reproduce
------------------
Run bootstrap

Expected Behavior
------------------
sysinv starts

Actual Behavior
----------------
sysinv crash

Reproducibility
---------------
100%

System Configuration
--------------------
AIO-SX, but should be all

Branch/Pull Time/Commit
-----------------------
Any up to 23-Dec-2021

Last Pass
---------
No.

Timestamp/Logs
--------------
2021-12-16 13:54:38.950 176711 ERROR sysinv.openstack.common.threadgroup File "/usr/lib/python3/dist-packages/sysinv/helm/helm.py", line 253, in _load_armada_manifest_operators
2021-12-16 13:54:38.950 176711 ERROR sysinv.openstack.common.threadgroup distribution = utils.get_distribution_from_entry_point(op.entry_point)
2021-12-16 13:54:38.950 176711 ERROR sysinv.openstack.common.threadgroup File "/usr/lib/python3/dist-packages/sysinv/common/utils.py", line 3299, in get_distribution_from_entry_point
2021-12-16 13:54:38.950 176711 ERROR sysinv.openstack.common.threadgroup if relative in distribution.files:
2021-12-16 13:54:38.950 176711 ERROR sysinv.openstack.common.threadgroup TypeError: argument of type 'NoneType' is not iterable

Test Activity
-------------
Debian Integration

Workaround
----------
Not relevant.

[Dan Voiculeasa (dvoicule)]

Added 2 commits as partial solutions:
https://review.opendev.org/c/starlingx/integ/+/822334
https://review.opendev.org/c/starlingx/integ/+/822830

For a complete solution the build system must be updated to allow these 2 to build before other python packages.

[Ghada Khalil (gkhalil)]

screening: stx.7.0 / medium; issue related to the debian build which is an stx.7.0 deliverable

[Ghada Khalil (gkhalil)]

Marking as Fix Released based on the partial fixes which appear sufficient to allow successful Debian builds