add args parameter for exec command

[alexei-led]

No description provided.

[github-actions]

Test Results

221 tests   219 ✅  0s ⏱️
  6 suites    2 💤
  1 files      0 ❌

Results for commit 480a751.

[codecov]

Codecov Report

Attention: Patch coverage is 33.33333% with 2 lines in your changes missing coverage. Please review.

Project coverage is 42.87%. Comparing base (34e73d9) to head (253e6be).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
pkg/chaos/docker/cmd/exec.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #272      +/-   ##
==========================================
- Coverage   43.18%   42.87%   -0.31%     
==========================================
  Files          40       40              
  Lines        1438     1439       +1     
==========================================
- Hits          621      617       -4     
- Misses        817      822       +5     

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