Moved unit to axislabel to save some space

Thanks to Jonas P.

dashboards/dashboard_base.py

@@ -81,7 +81,7 @@ def build_row_repeat_dashboard(
                         dataSource=dataSource,
                         targets=[get_influx_target(str(panel_query))],
                         repeat=Repeat('h', panel_repeat_var.name),
-                        unit=unit,
+                        axisLabel=unit,
                         pointSize=9,
                     ),
                 ],

tests/test_dashboard_creation.py

@@ -63,7 +63,7 @@ dashboard = Dashboard(
                         get_influx_target(str(q1))
                     ],
                     repeat=Repeat('h', host_var.name),
-                    unit='MLUPS per process',
+                    axisLabel='MLUPS per process',
                     pointSize=9,
                 ),
             ],