(cherry picked from commit 796716d441)

This is the final commit from the 2.x branch of multiple commits to fix the vulnerabilities
CVE-2019-0213 and CVE-2019-0214

(cherry picked from commit 8e5fdd4536)

(cherry picked from commit a36035b49b)

(cherry picked from commit 63154a6af8)

RepositoryRegistry is used for indexing context now. There is still more work to do
to move the maven dependent parts into its own projects and update the dependencies.

Switching to the repository registry to retrieve repository data.
Indexing is currently kept in the admin part, but will be moved in the future
to the registry.

As suggested in the SLF4J FAQ:
https://www.slf4j.org/faq.html#logging_performance
.. parameterized logging can improve the efficiency of logger calls when
logging at the specified level is disabled.

In addition, per the FAQ: https://www.slf4j.org/faq.html#paramException
since SLF4J 1.6.0 it is possible to use parameterized logging and also
log an exception/throwable.

toString() is called automatically:
https://www.slf4j.org/faq.html#string_contents

These changes were suggested by SLF4J Helper for NetBeans IDE:
http://plugins.netbeans.org/plugin/72557/

This matches the default configuration used in the latest version of Maven.

by placing these in the metadata model / API they can be used more broadly,
while the storage-dependant implementation can be in a plugin. This means the
plugins can be removed from the admin implementation, which can then be used
(as required) in the CLI

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1582713 13f79535-47bb-0310-9956-ffa450edef68

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1551836 13f79535-47bb-0310-9956-ffa450edef68

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1551473 13f79535-47bb-0310-9956-ffa450edef68

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1546890 13f79535-47bb-0310-9956-ffa450edef68

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1484362 13f79535-47bb-0310-9956-ffa450edef68

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1481952 13f79535-47bb-0310-9956-ffa450edef68

git-svn-id: https://svn.apache.org/repos/asf/archiva/trunk@1423879 13f79535-47bb-0310-9956-ffa450edef68