Az integration

[andrei-toterman]

This PR adds implementations for AZs and for the AZ manager, and integrates them in the daemon and the VMs.

There are also many tests file modified, since some APIs changed. The changes in those test files do nothing more than passing in stubs for AZs and the AZ manager where they are required.

MULTI-1870

[codecov[bot]]

Codecov Report

:x: Patch coverage is 87.04453% with 32 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 89.30%. Comparing base (0e5434c) to head (a9be08a). :warning: Report is 3841 commits behind head on availability-zones.

Files with missing lines	Patch %	Lines
src/daemon/daemon.cpp	73.17%	11 Missing :warning:
...latform/backends/shared/base_availability_zone.cpp	91.07%	5 Missing :warning:
...backends/shared/base_availability_zone_manager.cpp	92.85%	5 Missing :warning:
src/utils/json_utils.cpp	0.00%	5 Missing :warning:
...rc/platform/backends/shared/base_virtual_machine.h	0.00%	4 Missing :warning:
src/daemon/daemon_config.cpp	90.00%	2 Missing :warning:

Additional details and impacted files

@@                  Coverage Diff                   @@
##           availability-zones    #3924      +/-   ##
======================================================
+ Coverage               89.21%   89.30%   +0.09%     
======================================================
  Files                     260      264       +4     
  Lines                   14762    14953     +191     
======================================================
+ Hits                    13170    13354     +184     
- Misses                   1592     1599       +7     

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[ricab]

One other thing, is this represented in Jira somehow?

[andrei-toterman]

@xmkg could you, please, also go over @ricab's comments and see if they were addressed properly, as he is supposed to be a secondary reviewer? :)

[ricab]

Hey @Sploder12, is this ready for another look?

[Sploder12]

Hey @Sploder12, is this ready for another look?

I believe so!