fix: issue 579 and error handling when aci provider fail to be initialized

[smritidahal653]

• Duplicate app label causes helm install failure #579 : removing duplicate app label from deployment file as it will be populated from the helper file
• ACI provider : panic: runtime error: invalid memory address or nil pointer dereference #586 added error handling so VK does not crash in the case aci provider fails to be initialized

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (749ae82) 69.81% compared to head (d26cb15) 69.81%.
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #582   +/-   ##
=======================================
  Coverage   69.81%   69.81%           
=======================================
  Files          15       15           
  Lines        2597     2597           
=======================================
  Hits         1813     1813           
  Misses        666      666           
  Partials      118      118           

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