Support defining a maximum node version for a given platform

[natefoo]

As discussed in #183.

[jdavcs]

lgtm

[natefoo]

@jdavcs thanks for the review! I've reproduced the remaining error locally and the log contains:

INFO:alembic.runtime.migration:Context impl SQLiteImpl.
INFO:alembic.runtime.migration:Will assume non-transactional DDL.
Traceback (most recent call last):
  File "/srv/galaxy/server/lib/galaxy/webapps/galaxy/buildapp.py", line 59, in app_pair
    app = galaxy.app.UniverseApplication(global_conf=global_conf, **kwargs)
  File "/srv/galaxy/server/lib/galaxy/app.py", line 600, in __init__
    super().__init__(fsmon=True, **kwargs)
  File "/srv/galaxy/server/lib/galaxy/app.py", line 495, in __init__
    super().__init__(**kwargs)
  File "/srv/galaxy/server/lib/galaxy/app.py", line 244, in __init__
    self._configure_models(check_migrate_databases=self.config.check_migrate_databases, config_file=config_file)
  File "/srv/galaxy/server/lib/galaxy/app.py", line 429, in _configure_models
    self._verify_databases(engine, install_engine, combined_install_database)
  File "/srv/galaxy/server/lib/galaxy/app.py", line 453, in _verify_databases
    verify_databases(
  File "/srv/galaxy/server/lib/galaxy/model/migrations/__init__.py", line 157, in verify_databases
    gxy_verifier.run()
  File "/srv/galaxy/server/lib/galaxy/model/migrations/__init__.py", line 213, in run
    self._handle_nonempty_database()
  File "/srv/galaxy/server/lib/galaxy/model/migrations/__init__.py", line 238, in _handle_nonempty_database
    self._handle_with_alembic()
  File "/srv/galaxy/server/lib/galaxy/model/migrations/__init__.py", line 269, in _handle_with_alembic
    raise RevisionNotFoundError(model)
galaxy.model.migrations.exceptions.RevisionNotFoundError: The database has an alembic version table, but that table does not contain a revision for the galaxy model

But I have no idea why this only occurs on centos7.

[jdavcs]

@natefoo How did you reproduce it locally? (i.e., did you start galaxy? also, what's your database setup - I assume at least one db is sqlite?) From what I saw in the molecule output, I guessed it was a gravity restart one-of error - did I misread that log? Or was the migrations error visible only locally?

[natefoo]

It was only visible locally, so I can't say for sure it's the same issue being encountered here in the GHA. I used a local CentOS 7 VM and ran the role against that and it failed at the same place with the same error, but I was only able to get the underlying error from the log file in the VM. This is with a SQLite db, same as the test.

[jdavcs]

Apparently, related to galaxyproject/galaxy#15765