System Settings is not exporting properly the configuration when there is a companyId field whose value is 0

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.0 DXP GA1, Master
• Fix Version/s: 7.0.0 DXP FP6, 7.0.0 DXP SP1, 7.0.3 CE GA4, 7.1.X, Master
• Component/s: Portal Configuration > System Settings
• Labels:
  • liferay-digital-enterprise-70-sp1
  • liferay-fixpack-de-6-7010
• Branch Version/s:
  7.0.x
• Backported to Branch:
  Committed
• Story Points: 1
• Fix Priority: 4
• Git Pull Request: https://github.com/JorgeFerrer/liferay-portal/pull/788

Steps to reproduce:

1. Go to System Settings
2. Look for the configuration of "LDAP Auth"
3. Introduce the configuration
4. Export it

Result: The exported .cfg file does not have a "companyId" property
Expected: One of the properties in the exported .cfg file should be companyId=0

Note: This bug is probably not only happening with the companyId field. It might be with any field that doesn't have a value. Or maybe longs whose value is 0. A bit of analysis is required to ensure the bug is fully fixed.