set a default value for host var

dashboards/dashboard_fe2ti.py

@@ -51,7 +51,8 @@ def dashboard_fe2ti():
         row_repeat, show_tag_values(measurment_name, row_repeat), data_source, default='8')
 
     host_var = get_dashboard_variable_query(
-        'host', show_tag_values(measurment_name, 'host'), data_source, includeAll=False, multi=False)
+        'host', show_tag_values(measurment_name, 'host'),
+        data_source, includeAll=False, multi=False, default='skylakesp2')
 
     other_vars = [get_dashboard_variable_query(
         filter, show_tag_values(measurment_name, filter), data_source)