Currently, a tribe node ignored underlying cluster licenses
due to inablity to select an appropriate license from multiple
licenses. Now that tribe node supports merging custom metadata
(elasticsearch#elastic/elasticsearch#21552), we can enable license support in tribe
node.
Now, tribe node chooses license with the highest operation
mode from underlying cluster licenses. This commit also
adds integration tests for licensing to verify that:
- autogenerated trial license propagates to tribe node
- tribe node chooses the highest operation mode license
- removing a license from underlying cluster license is
removed from tribe
closeselastic/elasticsearch#3212
Original commit: elastic/x-pack-elasticsearch@b5c003decd
Areek Zillur