Missing primary keys from a few tables

[bjagg]

Describe the bug
There are missing primary keys in 3 tables. The cause seems to be due to using @jointable rather than @collectiontable

- UP_EVENT_AGGR_CONF_INTRVL_EXC
- UP_EVENT_AGGR_CONF_INTRVL_INC
- UP_SS_DESC_LAY_ATTR_ELMS

To Reproduce
Steps to reproduce the behavior:

1. run gradlew dataInit

Expected behavior
All uPortal tables have primary keys defined

[bjagg]

https://www.logicbig.com/tutorials/java-ee-tutorial/jpa/collection-table.html

https://github.com/Jasig/uPortal/blob/271f309ed71d57396737ef0c56f2a2dff4b61a73/uPortal-layout/uPortal-layout-core/src/main/java/org/apereo/portal/layout/dao/jpa/LayoutAttributeDescriptorImpl.java

[jgribonvald]

Good catch ! The thing is that the ID column exist but they aren't defined as PrimaryKeys !
The patch is easy, like the migration for existing datas.