Add multi organization support

[eiffel777]

This PR adds the ability to add multiple organizations in Open XDMoD via the organization.json file. Changes made to the ingestion of organization.json include:

• Allow option setting of ID value for each organization. Previously, the organization was always given the ID of 1
• Add new table, mod_shredder.staging_organization_config, that stores the values of the organization.json file.
• Existing table, mod_shredder.staging_organization, modified to just contain organization_id and organization_name with organization_id being an auto_increment. This table sets the ID value of the organization if one is not specified on organization.json. The use and structure of these two tables is copied from how the resources.json file are ingested.
• The organization option in xdmod-setup now allows for adding multiple organizations and listing all organizations in organization.json.
• The format of organization.json has changed to an array of json objects from a single json object. There is a config files migration to update existing installations to this format.

Notes:

• This is the first in a series of PR's for adding multi organization support to XDMoD and our documentation will need to be updated to reflect that. Those updates will be in later PR's since it is likely that changes made now will need to be changed again in those later PR's.
• The upgrade regression tests will fail until Adding an order to the Resource Specifications batch export #1979 is merged.

Tests performed

Tested in docker and added a new organization to test adding multiple organizations.

Checklist:

• The pull request description is suitable for a Changelog entry
• The milestone is set correctly on the pull request
• The appropriate labels have been added to the pull request

[jpwhite4]

You shouldn't need to add this php class. The ETLv2 code will automatically run migration pipelines based on their name.