Set cmis:allowedChildTypeIds to "not set" by default

Before, it defaults to some values(cmis:document, cmis:folder).
The spec says, if nothing is specified, that means all types are allowed.
Expose Relationships in each CMIS ObjectData

In addition to Relationship service, CMIS requires to nclude Relationships in each object.
Expose alias query names in CMIS SQL
Set some AllowableActions of Relationships

Relationships has no ACL stored in the database.
On the other hand, though canGetRelationships or canCreateRelationships actions exist in the specs, some actions are still needed to be set like canUpdateProperties or canDeleteObject.
Add Solr calling after each create/update/delete(optional)

For TCK Query Test