Reuse timing data in Tempest

We want to reuse timing data stored in the .stestr directory
across multiple Tempest runs. This will help executed tempest
tests to save time by optimizing the test order. This patch
introduces a new parameter that will be used to specify where
to find timing data to reuse.

Author: kstrenkova

api/bases/test.openstack.org_tempests.yaml

@@ -1630,6 +1630,13 @@ spec:
                       executed with --verbose
                     type: boolean
                 type: object
+              timingDataUrl:
+                description: |-
+                  An URL pointing to an archive that contains the saved stestr timing data.
+                  This data is used to optimize the tests order, which helps to reduce the
+                  total Tempest execution time.
+                format: uri
+                type: string
               tolerations:
                 description: |-
                   This value contains a toleration that is applied to pods spawned by the
@@ -2152,6 +2159,13 @@ spec:
                             be executed with --verbose
                           type: boolean
                       type: object
+                    timingDataUrl:
+                      description: |-
+                        An URL pointing to an archive that contains the saved stestr timing data.
+                        This data is used to optimize the tests order, which helps to reduce the
+                        total Tempest execution time.
+                      format: uri
+                      type: string
                     tolerations:
                       description: |-
                         This value contains a toleration that is applied to pods spawned by the

api/v1beta1/tempest_types.go

@@ -442,6 +442,14 @@ type TempestSpec struct {
 	// overridden with a result of the tempest run on the set of failed tests.
 	RerunOverrideStatus bool `json:"rerunOverrideStatus"`
 
+	// +kubebuilder:validation:Optional
+	// +kubebuilder:validation:Format=uri
+	// +operator-sdk:csv:customresourcedefinitions:type=spec
+	// An URL pointing to an archive that contains the saved stestr timing data.
+	// This data is used to optimize the tests order, which helps to reduce the
+	// total Tempest execution time.
+	TimingDataUrl string `json:"timingDataUrl,omitempty"`
+
 	// +kubebuilder:validation:Optional
 	// +operator-sdk:csv:customresourcedefinitions:type=spec
 	// NetworkAttachments is a list of NetworkAttachment resource names to expose

api/v1beta1/tempest_types_workflow.go

@@ -266,6 +266,14 @@ type WorkflowTempestSpec struct {
 	// overridden with a result of the tempest run on the set of failed tests.
 	RerunOverrideStatus *bool `json:"rerunOverrideStatus,omitempty"`
 
+	// +kubebuilder:validation:Optional
+	// +kubebuilder:validation:Format=uri
+	// +operator-sdk:csv:customresourcedefinitions:type=spec
+	// An URL pointing to an archive that contains the saved stestr timing data.
+	// This data is used to optimize the tests order, which helps to reduce the
+	// total Tempest execution time.
+	TimingDataUrl *string `json:"timingDataUrl,omitempty"`
+
 	// +kubebuilder:validation:Optional
 	// +operator-sdk:csv:customresourcedefinitions:type=spec
 	// NetworkAttachments is a list of NetworkAttachment resource names to expose

api/v1beta1/zz_generated.deepcopy.go

@@ -1630,6 +1630,13 @@ spec:
                       executed with --verbose
                     type: boolean
                 type: object
+              timingDataUrl:
+                description: |-
+                  An URL pointing to an archive that contains the saved stestr timing data.
+                  This data is used to optimize the tests order, which helps to reduce the
+                  total Tempest execution time.
+                format: uri
+                type: string
               tolerations:
                 description: |-
                   This value contains a toleration that is applied to pods spawned by the
@@ -2152,6 +2159,13 @@ spec:
                             be executed with --verbose
                           type: boolean
                       type: object
+                    timingDataUrl:
+                      description: |-
+                        An URL pointing to an archive that contains the saved stestr timing data.
+                        This data is used to optimize the tests order, which helps to reduce the
+                        total Tempest execution time.
+                      format: uri
+                      type: string
                     tolerations:
                       description: |-
                         This value contains a toleration that is applied to pods spawned by the

config/crd/bases/test.openstack.org_tempests.yaml

@@ -593,6 +593,7 @@ func (r *TempestReconciler) generateServiceConfigMaps(
 	envVars["TEMPEST_CLEANUP"] = r.GetDefaultBool(instance.Spec.Cleanup)
 	envVars["TEMPEST_RERUN_FAILED_TESTS"] = r.GetDefaultBool(instance.Spec.RerunFailedTests)
 	envVars["TEMPEST_RERUN_OVERRIDE_STATUS"] = r.GetDefaultBool(instance.Spec.RerunOverrideStatus)
+	envVars["TEMPEST_TIMING_DATA_URL"] = instance.Spec.TimingDataUrl
 
 	cms := []util.Template{
 		// ConfigMap