doap_libcloud.rdf: add 2.3.0 and 2.4.0 releases
<revision>v2.2.1</revision>
</Version>
</release>
+ <release>
+ <Version>
+ <name>2.3.0</name>
+ <created>2018-02-08</created>
+ <revision>v2.3.0</revision>
+ </Version>
+ </release>
+ <release>
+ <Version>
+ <name>2.4.0</name>
+ <created>2018-11-08</created>
+ <revision>v2.4.0</revision>
+ </Version>
+ </release>
<repository>
<SVNRepository>
<location rdf:resource="https://svn.apache.org/repos/asf/libcloud/trunk/"/>
