Warning into SVN app installation logs

Tested on a local instance of XE 7.4.2

1. Install the SVN app with Extension Manager.
2. Check the installation logs, until it`s finished.

Actual result:

• You get this warning after step Resolving extension [XWiki SVN Application 1.5.1] on namespace [Home]

  Could not validate integrity of download from http://nexus.xwiki.org/nexus/content/groups/public/org/xwiki/commons/xwiki-commons/4.4.1/xwiki-commons-4.4.1.pom: Checksum validation failed, expected a3e36edaf6953c6af6adc4bde74b38ce02f4c0e3 but is a88010535f6607ba0883ce6d17008933fbc03b9e
  

• The installation is done, despite this warning.