Fix MySQL log collection

The mysql logs weren't being copied to logs and published.

Change-Id: I20740b468e4b310ac07e77f3930cae92026942fb
diff --git a/.zuul.yaml b/.zuul.yaml
index 9853798..1b43611 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -240,8 +240,7 @@
         '{{ stage_dir }}/etc': logs
         /var/log/rabbitmq: logs
         /var/log/postgresql: logs
-        /var/log/mysql.err: logs
-        /var/log/mysql.log: logs
+        /var/log/mysql: logs
         /var/log/libvirt: logs
         /etc/sudoers: logs
         /etc/sudoers.d: logs