Reverse fsSpaceAvailableCriticalThreshold and fsSpaceAvailableWarningThreshold

Currently critical alert for space available alerts on warning and
warning alert for space available alerts on critical.

Signed-off-by: Daniel Lenar <dlenar@vailsys.com>

docs/node-mixin/alerts/alerts.libsonnet

@@ -48,7 +48,7 @@
             alert: 'NodeFilesystemAlmostOutOfSpace',
             expr: |||
               (
-                node_filesystem_avail_bytes{%(nodeExporterSelector)s,%(fsSelector)s} / node_filesystem_size_bytes{%(nodeExporterSelector)s,%(fsSelector)s} * 100 < %(fsSpaceAvailableCriticalThreshold)d
+                node_filesystem_avail_bytes{%(nodeExporterSelector)s,%(fsSelector)s} / node_filesystem_size_bytes{%(nodeExporterSelector)s,%(fsSelector)s} * 100 < %(fsSpaceAvailableWarningThreshold)d
               and
                 node_filesystem_readonly{%(nodeExporterSelector)s,%(fsSelector)s} == 0
               )
@@ -58,7 +58,7 @@
               severity: 'warning',
             },
             annotations: {
-              summary: 'Filesystem has less than %(fsSpaceAvailableCriticalThreshold)d%% space left.' % $._config,
+              summary: 'Filesystem has less than %(fsSpaceAvailableWarningThreshold)d%% space left.' % $._config,
               description: 'Filesystem on {{ $labels.device }} at {{ $labels.instance }} has only {{ printf "%.2f" $value }}% available space left.',
             },
           },
@@ -66,7 +66,7 @@
             alert: 'NodeFilesystemAlmostOutOfSpace',
             expr: |||
               (
-                node_filesystem_avail_bytes{%(nodeExporterSelector)s,%(fsSelector)s} / node_filesystem_size_bytes{%(nodeExporterSelector)s,%(fsSelector)s} * 100 < %(fsSpaceAvailableWarningThreshold)d
+                node_filesystem_avail_bytes{%(nodeExporterSelector)s,%(fsSelector)s} / node_filesystem_size_bytes{%(nodeExporterSelector)s,%(fsSelector)s} * 100 < %(fsSpaceAvailableCriticalThreshold)d
               and
                 node_filesystem_readonly{%(nodeExporterSelector)s,%(fsSelector)s} == 0
               )
@@ -76,7 +76,7 @@
               severity: '%(nodeCriticalSeverity)s' % $._config,
             },
             annotations: {
-              summary: 'Filesystem has less than %(fsSpaceAvailableWarningThreshold)d%% space left.' % $._config,
+              summary: 'Filesystem has less than %(fsSpaceAvailableCriticalThreshold)d%% space left.' % $._config,
               description: 'Filesystem on {{ $labels.device }} at {{ $labels.instance }} has only {{ printf "%.2f" $value }}% available space left.',
             },
           },