Migrate date formatting in x_set_md and set_x_md_json

Overview:

When comparing module schemas between Bugfest MG and a new MG deployment, several schemas have differences in their x_set_md and set_x_md_json functions. These functions have differences in the way the date formatting is done for object metadata. This appears to affect all functions of the form x_set_md and set_x_md_json.

I've attached a set of screenshots showing an example from mod-audit. The full list of modules affected is:

• mod-audit
• mod-circulation-storage
• mod-data-import
• mod-data-import-converter-storage
• mod-email
• mod-erm-usage
• mod-event-config
• mod-feesfines
• mod-finance-storage
• mod-inventory-storage
• mod-invoice-storage
• mod-login
• mod-orders-storage
• mod-organizations-storage
• mod-permissions
• mod-users