Merge pull request vitessio#5431 from planetscale/morgo-backport-stro…

…nger-root-protection

Back port stronger root protection

Merge pull request vitessio#5400 from harshit-gangal/jdbc-4.0

[JAVA] Vitess JDBC release 4.0

[maven-release-plugin] prepare release vitess-parent-3.0.0

Tagging 3.0

fix a couple of issues in local example:

* restore vschema.sql to keep vagrant working
* teardown correct vttablets after horizontal resharding

* Fix a typo in the helm charts

* Remove 8.0 incompatible settings from cnf files

First release candidate for 3.0

2.2 GA release

2.2.0 RC1 releae

2.2 alpha release