Add startup_udev_settle_wait option option to tunedConfig

The new startup_udev_settle_wait TuneD global option has recently been
added to /etc/tuned/tuned-main.conf.  This option should help in
situations where there are a lot of udev events during TuneD startup and
TuneD is too slow to handle them.

Users may want/need to adjust this period or completely disable this
functionality.

Other changes:
  - fix the logic when reapply_sysctl is undefined in
    /etc/tuned/tuned-main.conf

Also see: OCPBUGS-56442, OCPBUGS-57470

Author: jmencak

manifests/20-profile.crd.yaml

@@ -78,8 +78,12 @@ spec:
                       type: object
                       properties:
                         reapply_sysctl:
-                          description: 'turn reapply_sysctl functionality on/off for the TuneD daemon: true/false'
+                          description: 'turn reapply_sysctl functionality on/off for the TuneD daemon: true/false (default is true)'
                           type: boolean
+                        startup_udev_settle_wait:
+                          description: 'configure startup_udev_settle_wait timeout functionality for the TuneD daemon: unsigned integer (default is 20)'
+                          type: integer
+                          format: int64
                     tunedProfile:
                       description: TuneD profile to apply
                       type: string

manifests/20-tuned.crd.yaml

@@ -144,8 +144,14 @@ spec:
                           properties:
                             reapply_sysctl:
                               description: 'turn reapply_sysctl functionality on/off
-                                for the TuneD daemon: true/false'
+                                for the TuneD daemon: true/false (default is true)'
                               type: boolean
+                            startup_udev_settle_wait:
+                              description: 'configure startup_udev_settle_wait timeout
+                                functionality for the TuneD daemon: unsigned integer
+                                (default is 20)'
+                              format: int64
+                              type: integer
                           type: object
                         verbosity:
                           description: klog logging verbosity

pkg/apis/tuned/v1/tuned_types.go

@@ -128,9 +128,12 @@ type OperandConfig struct {
 
 // Global configuration for the TuneD daemon as defined in tuned-main.conf
 type TuneDConfig struct {
-	// turn reapply_sysctl functionality on/off for the TuneD daemon: true/false
+	// turn reapply_sysctl functionality on/off for the TuneD daemon: true/false (default is true)
 	// +optional
 	ReapplySysctl *bool `json:"reapply_sysctl"`
+	// configure startup_udev_settle_wait timeout functionality for the TuneD daemon: unsigned integer (default is 20)
+	// +optional
+	StartupUdevSettleWait *uint64 `json:"startup_udev_settle_wait"`
 }
 
 // TunedStatus is the status for a Tuned resource.