7417 - Update to Payara 5.2020.6

[poikilotherm]

What this PR does / why we need it:
Stability, security, bug fixes. Good thing, aren't they? Grateful for having them now after the dark days of Glassfish 4.1

Which issue(s) this PR closes:

Closes #7417

Special notes for your reviewer:
Dunno?

Suggestions on how to test this:
Follow the instructions to update. They take extreme precautions that might not be necessary, but better safe than sorry.

Does this PR introduce a user interface change? If mockups are available, please link/include them here:
Nope.

Is there a release notes update needed for this change?:
🔋 included.

Additional documentation:
Nada.

[pdurbin]

I found a few more places where we should update Payara. Please see the comments I left.

[coveralls]

Coverage remained the same at 19.48% when pulling 40b0b4c on poikilotherm:7417-payara-5.2020.6 into 9cce13d on IQSS:develop.

[pdurbin]

At this point I think we've identified all the instances of .2 that need to be changed to .6 but I added an additional question about upgrade docs. Basically, are we ok with linking to the official Payara docs or would it be better to write our own steps?

[pdurbin]

Basically, are we ok with linking to the official Payara docs or would it be better to write our own steps?

The consensus from Slack with me @landreev @kcondon and @djbrooke was that we're ok linking to the Payara docs so I'll go ahead and move this to QA.

[kcondon]

@poikilotherm @pdurbin
Tested fresh install, works fine.

Tested upgrade, used backup/restore domain method. Needs an additional step for Dataverse to run: copy postgres driver from old payara to new payara glassfish/lib dir. Should this go in release notes or will it be handled by the downstream pr?

Putting back into Review for comment.

[poikilotherm]

Well as the next PR about moving the Postgres driver into the WAR is already done #7420 and just waiting for review, I vote for not including a hint about that.

[kcondon]

So you would not confirm the upgrade worked before deploying the new war? I suppose it doesn't matter but wanted to ask. Game on!