Use absolute urls in the welcome page

RM Rest models: add noEmpty query parameter

Job2XMLTransformer:fix Task.isFork configuration

RMNodeStarter: do not call loadSigarIfRunningWithOneJar if monitoring…

also, disable GroovyClassInfoHandler log in forked jvm output

* upgrade-keycloak-related-dependencies

* fix SignalApiTest.java

increase web.qos.filter.max.requests and web.idle_timeout

DataSpaceServiceStarter: prevent the same userspace folder to be crea…

Revert "RMCore: make all read methods ImmediateService"

This reverts commit e71e98d1.

RMCore: make all read methods ImmediateService

Also, added a few utility read methods

GroovyClassInfoHandler: replace usage of crypto provider with Nashorn

This is to avoid compilation errors on some jdks

GroovyClassInfoHandler: remove groovy keys from both the System and E…

GroovyClassInfoHandler: add more defensive checks

GroovyClassInfoHandler: remove groovy keys stored in class loader par…

Improve SchedulerState serialization

implement readObject / writeObject methods to avoid serializing synchronized maps

Upgrade and embed install-cert library 

embedding install-cert is necessary since it contains a maven pom file which advertise a dependency to psql jar which contains a vulnerability

logger was not initialized

NodeSourceDescriptor: add the ability to read infrastructure and poli…

NodeSourceDescriptor: add the ability to read infrastructure and policy parameters using their names.

Add Groovy class cleanup mechanism

 - dependency to groovy added into common-client
 - count running groovy scripts and take a snapshot of existing classes when no script is running
 - Use of a scheduled background thread to perform actual cleanup.
 - cleanup calls System.gc() to effectively remove classes from the JVM memory
 - cleanup is disabled inside the ProActive server (only enabled inside nodes). Cleanup can be disabled at will via a java property.

Co-authored-by: Oana Schiopu <oana-schiopu@activeeon.com>