test: add e2e tests for getFreePort api method

[snitin315]

• This is a bugfix
• This is a feature
• This is a code refactor
• This is a test update
• This is a docs update
• This is a metadata update

For Bugs and Features; did you add new tests?

Yes

Motivation / Use-Case

add e2e tests for getFreePort api method.

Breaking Changes

None

Additional Info

No

[alexander-akait]

Let's add for host API tests too, but in the separate PR

[codecov]

Codecov Report

Merging #4114 (c599fb6) into master (d3858cb) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #4114   +/-   ##
=======================================
  Coverage   92.64%   92.64%           
=======================================
  Files          14       14           
  Lines        1481     1481           
  Branches      547      547           
=======================================
  Hits         1372     1372           
  Misses        101      101           
  Partials        8        8           

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