[PDI-11194] fixed the cause of integration test failure after the previous
merging
[CLEANUP]: Apply formatting to ValueMetaBase
Merge pull request #843 from andrey-markelov/PDI-11194

[PDI-11194] fixed the cause of integration test failure after the previous merging
[DOC] BACKLOG-1176 -- Document the REST calls for Carte (Kettle Path) (Part 1)

What was done:
1) added javadoc to 4 servlets
2) added JMeter tests