Fix vitessio#5776 in release branch

Signed-off-by: Morgan Tocker <[email protected]>

Merge pull request vitessio#5711 from planetscale/morgo-fix-rice-box

Fix rice-box not found problem

Merge pull request vitessio#5704 from planetscale/morgo-fix-5326-regr…

…ession

Fix regression introduced by vitessio#5326

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