Add priority to Kubernetes API

pkg/api/types.go

@@ -2213,6 +2213,20 @@ type PodSpec struct {
 	// file if specified. This is only valid for non-hostNetwork pods.
 	// +optional
 	HostAliases []HostAlias
+	// If specified, indicates the pod's priority. "SYSTEM" is a special keyword
+	// which indicates the highest priority. Any other name must be defined by
+	// creating a PriorityClass object with that name.
+	// If not specified, the pod priority will be default or zero if there is no
+	// default.
+	// +optional
+	PriorityClassName string
+	// The priority value. Various system components use this field to find the
+	// priority of the pod. When Priority Admission Controller is enabled, it
+	// prevents users from setting this field. The admission controller populates
+	// this field from PriorityClassName.
+	// The higher the value, the higher the priority.
+	// +optional
+	Priority *int32
 }
 
 // HostAlias holds the mapping between IP and hostnames that will be injected as an entry in the