Standardize notebook intro text and clean up import cells

[laurafitzgerald]

• Add 'First, we'll need to import...' text to all notebooks missing it
• Remove '# Import pieces from codeflare-sdk' and '# Imports' comments
• Remove stray leading blank lines from import cells
• Update 5_submit_rayjob_cr auth cell from oc login to kube-authkit

Issue link

TBD

What changes have been made

Standardize notebook intro text and clean up import cells

• Add 'First, we'll need to import...' text to all notebooks missing it
• Remove '# Import pieces from codeflare-sdk' and '# Imports' comments
• Remove stray leading blank lines from import cells
• Update 5_submit_rayjob_cr auth cell from oc login to kube-authkit

Verification steps

Upload the notebooks and verify that the imports and logins are consistent and that for notebooks where auth updates are

• demo-notebooks/guided-demos/5_submit_rayjob_cr.ipynb
• demo-notebooks/guided-demos/4_rayjob_existing_cluster.ipynb

Checks

• I've made sure the tests are passing.
• Testing Strategy
  • Unit tests
  • Manual tests
  • Testing is not required for this change

[openshift-ci]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.52%. Comparing base (8ddddf7) to head (55a1e05).
⚠️ Report is 16 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1060   +/-   ##
=======================================
  Coverage   96.52%   96.52%           
=======================================
  Files          23       23           
  Lines        2271     2271           
=======================================
  Hits         2192     2192           
  Misses         79       79           

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[openshift-ci]

PR needs rebase.

Details

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