[IA-4825] Get drshub url from helm, not hardcoded reference.conf

[LizBaldo]

Jira ticket: https://broadworkbench.atlassian.net/browse/IA-4825

Summary of changes

What

• Make sure that the drs url is pulled from leonardo helm values to leo.conf and not what is hardcoded in reference.conf

Why

Testing these changes

What to test

Who tested and where

• This change is covered by automated tests
  • NB: Rerun automation tests on this PR by commenting jenkins retest or jenkins multi-test.
• I validated this change
• Primary reviewer validated this change
• I validated this change in the dev environment

[rtitle]

Looks good - I validated we are setting that EV in helmfile: https://github.com/broadinstitute/terra-helmfile/blob/master/values/app/leonardo/live/prod.yaml#L75

Though it looks like it's still on martha, not drshhub 🤔

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (86c1f77) 71.20% compared to head (002221a) 71.19%.
Report is 3 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #4201      +/-   ##
===========================================
- Coverage    71.20%   71.19%   -0.02%     
===========================================
  Files          147      147              
  Lines        13966    13966              
  Branches      1123     1123              
===========================================
- Hits          9945     9943       -2     
- Misses        4021     4023       +2     

Flag	Coverage Δ
pact	48.00% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

see 1 file with indirect coverage changes

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 22eb6b0...002221a. Read the comment docs.

[LizBaldo]

Testing on my BEE and the new URLs are up now 👍