tests: ganeti: Increase VM memory size.

* gnu/tests/ganeti.scm (run-ganeti-test): Pass ‘-m 1024’ to
‘make-marionette’.

Reviewed-by: Maxim Cournoyer <maxim.cournoyer@gmail.com>
Change-Id: I82c8a0eb37c16079f1affe793afc0d8a773c62c8

gnu/tests/ganeti.scm

@@ -117,7 +117,7 @@
                        (gnu build marionette))
 
           (define marionette
-            (make-marionette (list #$vm)))
+            (make-marionette (list #$vm "-m" "1024")))
 
           (test-runner-current (system-test-runner #$output))
           (test-begin "ganeti")