Add zuul-launcher max servers

We have a metric for the "instance limit", let's use that to draw
the "max servers" line on zuul-launcher providers.

Change-Id: I4e22b229bd2901e314e1547d6053018df8fa86eb

grafana/zuul-launcher-openmetal.yaml

@@ -89,3 +89,7 @@ dashboard:
             - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.nodes.state.in-use), 'In Use')
             - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.nodes.state.used), 'Used')
             - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.nodes.state.deleting), 'Deleting')
+            - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.limit.instances), 'Max')
+          seriesOverrides:
+            - alias: Max
+              stack: False

grafana/zuul-launcher-osuosl.yaml

@@ -89,3 +89,7 @@ dashboard:
             - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.nodes.state.in-use), 'In Use')
             - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.nodes.state.used), 'Used')
             - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.nodes.state.deleting), 'Deleting')
+            - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.limit.instances), 'Max')
+          seriesOverrides:
+            - alias: Max
+              stack: False

grafana/zuul-launcher-ovh.yaml

@@ -89,3 +89,7 @@ dashboard:
             - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.nodes.state.in-use), 'In Use')
             - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.nodes.state.used), 'Used')
             - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.nodes.state.deleting), 'Deleting')
+            - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.limit.instances), 'Max')
+          seriesOverrides:
+            - alias: Max
+              stack: False

grafana/zuul-launcher-rax.yaml

@@ -89,3 +89,7 @@ dashboard:
             - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.nodes.state.in-use), 'In Use')
             - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.nodes.state.used), 'Used')
             - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.nodes.state.deleting), 'Deleting')
+            - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.limit.instances), 'Max')
+          seriesOverrides:
+            - alias: Max
+              stack: False

grafana/zuul-launcher-raxflex.yaml

@@ -89,3 +89,7 @@ dashboard:
             - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.nodes.state.in-use), 'In Use')
             - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.nodes.state.used), 'Used')
             - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.nodes.state.deleting), 'Deleting')
+            - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.limit.instances), 'Max')
+          seriesOverrides:
+            - alias: Max
+              stack: False

grafana/zuul-launcher-vexxhost.yaml

@@ -89,3 +89,7 @@ dashboard:
             - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.nodes.state.in-use), 'In Use')
             - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.nodes.state.used), 'Used')
             - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.nodes.state.deleting), 'Deleting')
+            - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.limit.instances), 'Max')
+          seriesOverrides:
+            - alias: Max
+              stack: False

grafana/zuul-launcher.template

@@ -89,3 +89,7 @@ dashboard:
             - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.nodes.state.in-use), 'In Use')
             - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.nodes.state.used), 'Used')
             - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.nodes.state.deleting), 'Deleting')
+            - target: alias(sumSeries(stats.gauges.zuul.provider.opendev_org2Fopendev2Fzuul-providers-$region-main.limit.instances), 'Max')
+          seriesOverrides:
+            - alias: Max
+              stack: False