travis: libsys-virt-perl installed via apt

.travis.yml

@@ -6,6 +6,7 @@ install:
   - sudo apt-get --no-install-recommends install pkg-config libdb-dev libvirt-dev libexpat-dev
   # - Munin/Plugin.pm is in "munin-node" on precise
   - sudo apt-get --no-install-recommends install munin-node
+  - sudo apt-get --no-install-recommends install libsys-virt-perl
 
   # Modules used by test script
   - cpanm --notest Capture::Tiny
@@ -51,11 +52,9 @@ install:
   - cpanm --notest XML::Twig
   - cpanm --notest nvidia::ml
   - cpanm --notest experimental
-  # - Sys::Virt version matching the test system's libvirt-dev
-  - cpanm --notest DANBERR/Sys-Virt-0.9.8.tar.gz
   # Modules used by plugins, but missing on cpan
   # - File::Tail::Multi
   # - Sun::Solaris::Kstat
   # - VMware::VIRuntime
   # - MythTV
-script: "PERL5LIB=$PERL5LIB:/usr/share/perl5 prove"
+script: "PERL5LIB=$PERL5LIB:/usr/share/perl5:/usr/lib/perl5 prove"