Add k8s cron job import command (#2522)

---------

Co-authored-by: Sri Ramanujam <[email protected]>

Author: sheneska

docs/resources/cron_job.md

@@ -2363,3 +2363,10 @@ resource "kubernetes_cron_job" "demo" {
   }
 }
 ```
+
+
+## Import 
+
+```
+$ terraform import kubernetes_cron_job_v1/example default/example
+```

templates/resources/cron_job.md.tmpl

@@ -20,3 +20,10 @@ Note: All CronJob `schedule` times are based on the timezone of the master where
 ## Example Usage
 
 {{tffile "examples/resources/cron_job/example_1.tf"}}
+
+
+## Import 
+
+```
+$ terraform import kubernetes_corn_job_v1/example default/example
+```