TC reconfig

[adcroft]

Some refactoring .testing

• Cleaned up .gitignore
• Reduced diag_tables
• Made tc3 smaller
• Added a variant of tc1 (tc1.a)

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (dev/gfdl@c7d2a71). Click here to learn what that means.
The diff coverage is n/a.

@@             Coverage Diff             @@
##             dev/gfdl     #989   +/-   ##
===========================================
  Coverage            ?   43.24%           
===========================================
  Files               ?      213           
  Lines               ?    62214           
  Branches            ?        0           
===========================================
  Hits                ?    26905           
  Misses              ?    35309           
  Partials            ?        0

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update c7d2a71...a6e1599. Read the comment docs.

[marshallward]

Change is in the test suite, so no Gaea testing is needed.

Still not sure why it's not reporting a relative code coverage to dev/gfdl, but at least we're getting coverage reports now.