Add more CI to GW-CI

[DavidNew-NOAA]

This PR is a companion to #1365. It makes inclusion of the testing blocks in the algorithm templates dependent on a do_testing parameter that will be set in the JCB base YAML.

[RussTreadon-NOAA]

Approve.

[danholdaway]

This is probably not an ideal way to change things. You need to have do_testing in every single application of JCB whether it's true or false. Better would have been:

{% if do_testing | default(false) %}

FYI the testing of jcb is working now so we shouldn't ignore failures. I suspect that if we tried to run GDASapp with this we'd see a lot of failures because of the need to add do_testing to all the jcb-base YAMLS.

[danholdaway]

Before I fix things, what was wrong with using {% if test_reference_filename is defined %}? We now have a mixture of this approach and do_testing across the YAMLs so we should pick one. I'm fine with do_testing if that's the way we want to go.

[DavidNew-NOAA]

@danholdaway See my comment here NOAA-EMC/jcb-gdas#42 (comment)

[danholdaway]

OK. Then I will apply the same to all the YAMLs in jcb-algo.

[DavidNew-NOAA]

This PR was merged a bit prematurely, I was hoping to have your eyes on it before that happened.

[danholdaway]

No problem. Straightforward fix I think. And apologies that I did not review sooner.