URLRealm changed to use HttpClient4

It was using Restlet Client, and since Realms are in Core,
Restlet was defunct in core anymore. Also, Restlet
client suffered from lack of HTTP proxy support.

Now both problems are gone.
Kenai realm rewritten to use HC4

And simplified
Fixed scope

(this is not a nexus plugin...)
update from SNAPSHOTs to releases, and latest spice-parent
depend on latest forge-parent instead of spice-parent

update plugins to remove duplicate config / inherit from parent

WILL USE nexus-staging plugin for deploys now
license:format
add missing plexus-component-metadata plugin config that used to come from spice parent
remove plugin versions inherited from parent
borrow plexus.version property for plexus-component-metadata plugin
spelling
remove plexus-component-metadata plugin management - its in parent
inherit enforcer plugin version from parent
remove superfluous plugin executions
fix targetNamespace deprecation warnings
depend on forge-parent 24
cleanup pom names and groupIds
[maven-release-plugin] prepare release security-3.0
[maven-release-plugin] prepare for next development iteration
NXCM-4814 log and ignore runtime exceptions in CatchingModularRealmAuthorizer

Signed-off-by: Igor Fedorenko <igor@ifedorenko.com>
[maven-release-plugin] prepare release security-3.0.1