test: don't test for static node count if add node pool context

[jackfrancis]

Reason for Change:

Until we make the E2E test runner more intelligent so that it is able to introspect the modified api model after a addpool operation, we should not check for a static node count in the E2E test job (because we are not correctly calculating the static count of nodes in the cluster in this context).

Issue Fixed:

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests
• tested upgrade from previous version

Notes:

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[codecov]

Codecov Report

Merging #2619 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2619   +/-   ##
=======================================
  Coverage   71.79%   71.79%           
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  Files         131      131           
  Lines       24787    24787           
=======================================
  Hits        17795    17795           
  Misses       5966     5966           
  Partials     1026     1026