Set Cron* types and defaults to v1beta1 (#88)

According to the Kubernetes documentation [1]:

Note: CronJob resource in batch/v2alpha1 API group has been deprecated
starting from cluster version 1.8. You should switch to using
batch/v1beta1, instead, which is enabled by default in the API server.
Examples in this document use batch/v1beta1 in all examples.

[1]: https://kubernetes.io/docs/tasks/job/automated-tasks-with-cron-jobs/

defaults.dhall

@@ -171,13 +171,13 @@
 , JobStatus =
     ./defaults/io.k8s.api.batch.v1.JobStatus.dhall sha256:a8d8e591e2fe1686c47015ccb1ec4d526b2556e393d2971d9df4f2d670c66f1e
 , CronJob =
-    ./defaults/io.k8s.api.batch.v2alpha1.CronJob.dhall sha256:22bd1bc427a0173d7c0f4e0f2c13af682cf70bfdd82ecb0e66df85ed6129e584
+    ./defaults/io.k8s.api.batch.v1beta1.CronJob.dhall sha256:392527fc2b80465f7fcc5ab9b4180c1541b0fceb58e584b65f67b7b7a3a70c3a
 , CronJobList =
-    ./defaults/io.k8s.api.batch.v2alpha1.CronJobList.dhall sha256:26a29a0202fd41a94d4261ab037286a03dd8c6a41f518ec251bd68fdb7147b6b
+    ./defaults/io.k8s.api.batch.v1beta1.CronJobList.dhall sha256:72a6a8157f567f5a60b8b34eea8b11e6199ddbeaefa7fcac5a645fa61257f645
 , CronJobSpec =
-    ./defaults/io.k8s.api.batch.v2alpha1.CronJobSpec.dhall sha256:31b776fcebe0d3da14c9af5c5e96a35fe3b73883717a1cd26234f48064950325
+    ./defaults/io.k8s.api.batch.v1beta1.CronJobSpec.dhall sha256:31b776fcebe0d3da14c9af5c5e96a35fe3b73883717a1cd26234f48064950325
 , CronJobStatus =
-    ./defaults/io.k8s.api.batch.v2alpha1.CronJobStatus.dhall sha256:74d9ee0419f4a414496b1195a1fa782696a07d131edf8194fa2d3dae5253a70b
+    ./defaults/io.k8s.api.batch.v1beta1.CronJobStatus.dhall sha256:74d9ee0419f4a414496b1195a1fa782696a07d131edf8194fa2d3dae5253a70b
 , JobTemplateSpec =
     ./defaults/io.k8s.api.batch.v2alpha1.JobTemplateSpec.dhall sha256:2064710fdd9153299b2090c2c3a3c828153d5b94c346da0c252ebad5f18bf9d6
 , CertificateSigningRequest =

dhall-kubernetes-generator/src/Dhall/Kubernetes/Data.hs

@@ -42,10 +42,10 @@ excludedModels = Set.fromList $ ModelName <$>
   , "io.k8s.api.apps.v1beta2.ControllerRevision"
   , "io.k8s.api.apps.v1beta1.ControllerRevisionList"
   , "io.k8s.api.apps.v1beta2.ControllerRevisionList"
-  , "io.k8s.api.batch.v1beta1.CronJob"
-  , "io.k8s.api.batch.v1beta1.CronJobList"
-  , "io.k8s.api.batch.v1beta1.CronJobSpec"
-  , "io.k8s.api.batch.v1beta1.CronJobStatus"
+  , "io.k8s.api.batch.v2alpha1.CronJob"
+  , "io.k8s.api.batch.v2alpha1.CronJobList"
+  , "io.k8s.api.batch.v2alpha1.CronJobSpec"
+  , "io.k8s.api.batch.v2alpha1.CronJobStatus"
   , "io.k8s.api.autoscaling.v1.CrossVersionObjectReference"
   , "io.k8s.api.autoscaling.v2beta1.CrossVersionObjectReference"
   , "io.k8s.api.apps.v1beta2.DaemonSet"

examples/deployment.dhall

@@ -2,7 +2,7 @@ let types =
       ../types.dhall sha256:e48e21b807dad217a6c3e631fcaf3e950062310bfb4a8bbcecc330eb7b2f60ed
 
 let defaults =
-      ../defaults.dhall sha256:4450e23dc81975d111650e06c0238862944bf699537af6cbacac9c7e471dfabe
+      ../defaults.dhall sha256:98bf62170e7785da6f627a06980c5788a5b8bdd0d1e61bb7c141beef18a3129c
 
 let kv =
       ( ../Prelude.dhall).JSON.keyText

examples/deploymentSimple.dhall

@@ -2,7 +2,7 @@ let types =
       ../types.dhall sha256:e48e21b807dad217a6c3e631fcaf3e950062310bfb4a8bbcecc330eb7b2f60ed
 
 let defaults =
-      ../defaults.dhall sha256:4450e23dc81975d111650e06c0238862944bf699537af6cbacac9c7e471dfabe
+      ../defaults.dhall sha256:98bf62170e7785da6f627a06980c5788a5b8bdd0d1e61bb7c141beef18a3129c
 
 let deployment
     : types.Deployment

examples/ingress.dhall

@@ -8,7 +8,7 @@ let types =
       ../types.dhall sha256:e48e21b807dad217a6c3e631fcaf3e950062310bfb4a8bbcecc330eb7b2f60ed
 
 let defaults =
-      ../defaults.dhall sha256:4450e23dc81975d111650e06c0238862944bf699537af6cbacac9c7e471dfabe
+      ../defaults.dhall sha256:98bf62170e7785da6f627a06980c5788a5b8bdd0d1e61bb7c141beef18a3129c
 
 let Service = { name : Text, host : Text, version : Text }
 

examples/service.dhall

@@ -2,7 +2,7 @@ let types =
       ../types.dhall sha256:e48e21b807dad217a6c3e631fcaf3e950062310bfb4a8bbcecc330eb7b2f60ed
 
 let defaults =
-      ../defaults.dhall sha256:4450e23dc81975d111650e06c0238862944bf699537af6cbacac9c7e471dfabe
+      ../defaults.dhall sha256:98bf62170e7785da6f627a06980c5788a5b8bdd0d1e61bb7c141beef18a3129c
 
 let kv = (../Prelude.dhall).JSON.keyText
 

types.dhall

@@ -171,13 +171,13 @@
 , JobStatus =
     ./types/io.k8s.api.batch.v1.JobStatus.dhall sha256:f9ea74adce4426e2277120d8427b62ca553e6a57274469139665a59801f8e1cd
 , CronJob =
-    ./types/io.k8s.api.batch.v2alpha1.CronJob.dhall sha256:840986a1e70a00f6e2e2f23b07a37512d898c58d74e26d30fc7323b410c8e361
+    ./types/io.k8s.api.batch.v1beta1.CronJob.dhall sha256:840986a1e70a00f6e2e2f23b07a37512d898c58d74e26d30fc7323b410c8e361
 , CronJobList =
-    ./types/io.k8s.api.batch.v2alpha1.CronJobList.dhall sha256:976540580d18de17232ed4e476a9187252b76f53d1ac42490ae3c7e0298a29c6
+    ./types/io.k8s.api.batch.v1beta1.CronJobList.dhall sha256:976540580d18de17232ed4e476a9187252b76f53d1ac42490ae3c7e0298a29c6
 , CronJobSpec =
-    ./types/io.k8s.api.batch.v2alpha1.CronJobSpec.dhall sha256:e89fa481f32a37dcbf1d9fee7d6889dfa22f864cb73d9f3c24eb95a50c7076b3
+    ./types/io.k8s.api.batch.v1beta1.CronJobSpec.dhall sha256:e89fa481f32a37dcbf1d9fee7d6889dfa22f864cb73d9f3c24eb95a50c7076b3
 , CronJobStatus =
-    ./types/io.k8s.api.batch.v2alpha1.CronJobStatus.dhall sha256:bde64bf966a728236e65593d21075a7f13c954793b7676d628b53594c2619b92
+    ./types/io.k8s.api.batch.v1beta1.CronJobStatus.dhall sha256:bde64bf966a728236e65593d21075a7f13c954793b7676d628b53594c2619b92
 , JobTemplateSpec =
     ./types/io.k8s.api.batch.v2alpha1.JobTemplateSpec.dhall sha256:163664a9da1702255493569597194ecc983bf46b3e775ee6de29c01da10bfe62
 , CertificateSigningRequest =