storage: create logical volume with --yes option

If lvcreate found an existing signature when trying to create a
new logical volume (E.g. left after some deleted volume), the
action failed due to inability to answer interactive question to
wiping it (lvcreate assumed 'no' was the answer). With added
option --yes to the command line, the answer to any interactive
question is assumed to be yes. Therefore, lvcreate wipes the
signature and the new volume is created successfully.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1940413

Signed-off-by: Kristina Hanicova <khanicov@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>

src/storage/storage_backend_logical.c

@@ -863,6 +863,8 @@ virStorageBackendLogicalLVCreate(virStorageVolDef *vol,
     else
         virCommandAddArg(cmd, def->source.name);
 
+    virCommandAddArg(cmd, "--yes");
+
     return virCommandRun(cmd, NULL);
 }