Setup gvamysql using new mechanisms

states/patches/files/3000-mysql.diff

@@ -0,0 +1,13 @@
+diff --git a/salt/modules/mysql.py b/salt/modules/mysql.py
+index 87e2361e28..37436206d4 100644
+--- a/salt/modules/mysql.py
++++ b/salt/modules/mysql.py
+@@ -355,7 +355,7 @@ def _connect(**kwargs):
+                 except IndexError:
+                     return
+             val = __salt__['config.option']('mysql.{0}'.format(name), None)
+-            if val is not None:
++            if val != '':
+                 connargs[key] = val
+
+     # If a default file is explicitly passed to kwargs, don't grab the

states/patches/mysql.sls

@@ -0,0 +1,19 @@
+{% if grains.saltversion == "3000" %}
+patch:
+  pkg.installed
+
+mysql_module_patch:
+  file.patch:
+    - name: '{{ grains.saltpath }}'
+    - source: salt://patches/files/3000-mysql.diff
+    - strip: 2
+    - require:
+        - pkg: patch
+
+restart_salt_minion:
+  cmd.run:
+    - name: 'salt-call service.restart salt-minion'
+    - bg: true
+    - onchanges:
+      - file: mysql_module_patch
+{%- endif %}