Update AbpApplicationConfigurationController.cs

[karakule006]

In some projects, we may need to Customize AbpApplicationConfigurationController controllers. So it has to be virtual.

[codecov]

Codecov Report

Merging #10972 (fd14fb5) into dev (357d60e) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev   #10972   +/-   ##
=======================================
  Coverage   54.52%   54.52%           
=======================================
  Files        2650     2650           
  Lines       75771    75771           
=======================================
  Hits        41311    41311           
  Misses      34460    34460           

Impacted Files	Coverage Δ
...gurations/AbpApplicationConfigurationController.cs	0.00% <ø> (ø)
...Volo.Abp.Cli.Core/Volo/Abp/Cli/Auth/AuthService.cs	16.66% <ø> (ø)

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[realLiangshiwei]

Thanks @karakule006

[karakule006]

Thanks.