refactor: Remove custom code used by old Azure SDK - part 2

[helayoty]

Remove the ContainerGroupWrapper that we used to send the extension property. As ACI SDK v2.2.2` implements it.

[codecov-commenter]

Codecov Report

Merging #423 (91ab901) into master (0c76852) will increase coverage by 0.33%.
The diff coverage is 59.13%.

@@            Coverage Diff             @@
##           master     #423      +/-   ##
==========================================
+ Coverage   42.91%   43.24%   +0.33%     
==========================================
  Files          50       50              
  Lines        5735     5825      +90     
==========================================
+ Hits         2461     2519      +58     
- Misses       3017     3050      +33     
+ Partials      257      256       -1     

Impacted Files	Coverage Δ
pkg/network/aci_network.go	25.92% <30.55%> (-0.61%)	⬇️
pkg/auth/auth.go	60.32% <44.68%> (-6.35%)	⬇️
pkg/metrics/metrics.go	75.18% <57.14%> (-1.56%)	⬇️
pkg/provider/aci.go	36.78% <58.82%> (+2.88%)	⬆️
pkg/provider/aci_volumes.go	45.19% <66.66%> (ø)
pkg/provider/containergroup_to_pod.go	75.39% <86.53%> (+0.11%)	⬆️
pkg/analytics/analytics.go	64.70% <100.00%> (ø)

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