Generation should not be a required field

In the InstallPlan, the Generation field should not be required and may
be omitted.

Bugzilla Ref: https://bugzilla.redhat.com/show_bug.cgi?id=1825349

Author: awgreene

deploy/chart/templates/0000_50_olm_04-installplan.crd.yaml

@@ -67,7 +67,6 @@ spec:
           - approval
           - approved
           - clusterServiceVersionNames
-          - generation
           properties:
             approval:
               description: Approval is the user approval policy for an InstallPlan.

manifests/0000_50_olm_04-installplan.crd.yaml

@@ -67,7 +67,6 @@ spec:
           - approval
           - approved
           - clusterServiceVersionNames
-          - generation
           properties:
             approval:
               description: Approval is the user approval policy for an InstallPlan.
@@ -301,4 +300,3 @@ spec:
                     description: StepStatus is the current status of a particular
                       resource an in InstallPlan
                     type: string
-

pkg/api/apis/operators/v1alpha1/installplan_types.go

@@ -28,7 +28,7 @@ type InstallPlanSpec struct {
 	ClusterServiceVersionNames []string `json:"clusterServiceVersionNames"`
 	Approval                   Approval `json:"approval"`
 	Approved                   bool     `json:"approved"`
-	Generation                 int      `json:"generation"`
+	Generation                 int      `json:"generation,omitempty"`
 }
 
 // InstallPlanPhase is the current status of a InstallPlan as a whole.