Dependencies updates

[pierre]

Some of these are pre-requisite for Java 11 support.

Wave 1

• Jackson to 2.11.1. Release notes
• Guava to 29.0. Release notes. Transitive dependencies have changed, something to look at.
• Guice to 4.2.3. Release notes. Transitive dependencies have changed (e.g. multibinding), something to look at.
• slf4j to 1.7.30. Release notes
• Ehcache to 3.8.x. Release notes
• Jetty and jetty-maven-plugin to 9.4.x
• Various Maven plugins affecting the build
• Mockito
• com.ning:async-http-client to org.asynchttpclient:async-http-client

Wave 2

• HikariCP to 3.4.5. Release notes
• MariaDB to 2.6.x. Release notes
• Shiro to 1.6.x. Release notes. See Upgrade Shiro to 2.x #36
• Jooby to 2.x See Upgrade Jooby #40
• Jooq (plugins generated code must be re-generated)
• Snowflakes in various repos, such as commons-compress in platform and Kill Bill or flyway in Kill Bill (see Upgrade Flyway #39)

Wave 3

• Metrics to 4.1.x. See Upgrade Metrics to 4.2.x #37
• Jersey to 2.x. This is a project (migration guide, Guice wiring must be re-done, Swagger wiring might need to be updated). Related: javax.servlet-api to 4.x (we'll tackle this separately)

Wave 4

• Felix to 7.x. This is a project