Bug 20949: Koha depends on Clone

Clone was not declared a dependency before. It used to be a dependency
of Hash::Merge but isn't in the recent version.

Signed-off-by: Mirko Tietgen <mirko@abunchofthings.net>

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>

C4/Installer/PerlDependencies.pm

@@ -903,6 +903,11 @@ our $PERL_DEPS = {
        required => '1',
        min_ver  => '0.17'
     },
+    'Clone' => {
+        usage    => 'ILL, Test suite',
+        required => '1',
+        min_ver  => '0.37',
+    },
 };
 
 1;