Fix Nightly Conformance

[dereknola]

Proposed Changes

• Correctly track PIDs of conformance tests
• Remove old Conformance Dockerfile, not used in several years.

Types of Changes

Test fix

Verification

Nightly cron should pass

Testing

Linked Issues

TBD

User-Facing Change

Further Comments

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 19.91%. Comparing base (e8062bf) to head (6187b54).
Report is 2 commits behind head on master.

❗ There is a different number of reports uploaded between BASE (e8062bf) and HEAD (6187b54). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (e8062bf)	HEAD (6187b54)
e2etests	1	0

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #12527       +/-   ##
===========================================
- Coverage   40.52%   19.91%   -20.62%     
===========================================
  Files         187      184        -3     
  Lines       19330    19265       -65     
===========================================
- Hits         7834     3836     -3998     
- Misses      10307    14997     +4690     
+ Partials     1189      432      -757     

Flag	Coverage Δ
e2etests	?
unittests	19.91% <ø> (+<0.01%)	⬆️

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