Add e2e for oob configuration

[ahreehong]

Issue #, if available:

Description of changes:
Add E2E tests for out of band management.

Deployed a RPC consumer on the lab CI to handle powering on/off hardware and PXE booting. This test sets the required ENV VARs and runs the eks-a e2e flow using this RPC consumer.

Testing (if applicable):
Ran the e2es locally and verified that it works.

Documentation added/planned (if applicable):

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[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (c50df49) 71.99% compared to head (1666d09) 72.01%.
Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6826      +/-   ##
==========================================
+ Coverage   71.99%   72.01%   +0.02%     
==========================================
  Files         532      532              
  Lines       41597    41669      +72     
==========================================
+ Hits        29947    30010      +63     
- Misses       9978     9984       +6     
- Partials     1672     1675       +3     

see 6 files with indirect coverage changes

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[ahreehong]

/approve

[eks-distro-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ahreehong

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[abhinavmpandey08]

/lgtm
/woof

[eks-distro-bot]

@abhinavmpandey08:

In response to this:

/lgtm
/woof

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