Add argument specs for new roles

plays/backups/roles/snapshots/meta/argument_specs.yml

@@ -0,0 +1,7 @@
+argument_specs:
+  main:
+    options:
+      backups_snapshots_sanoid_system_datasets:
+        type: "list"
+        elem: "dict"
+        required: true

plays/services/roles/backups/meta/argument_specs.yml

@@ -0,0 +1,12 @@
+argument_specs:
+  main:
+    options:
+      ansible_hostname:
+        type: "str"
+        required: true
+      services_data_dataset:
+        type: "str"
+        required: true
+      services_backups_backup_data_dataset:
+        type: "str"
+        required: true

plays/services/roles/datasets/backups/system/meta/argument_specs.yml

@@ -0,0 +1,15 @@
+argument_specs:
+  main:
+    options:
+      ansible_hostname:
+        type: "str"
+        required: true
+      services_backups_backup_dataset:
+        type: "str"
+        required: true
+      services_backups_backup_root_dataset:
+        type: "str"
+        required: true
+      services_backups_backup_data_dataset:
+        type: "str"
+        required: true

plays/services/roles/datasets/backups/user/meta/argument_specs.yml

@@ -0,0 +1,12 @@
+argument_specs:
+  main:
+    options:
+      ansible_hostname:
+        type: "str"
+        required: true
+      services_backups_backup_data_dataset:
+        type: "str"
+        required: true
+      services_service_name:
+        type: "str"
+        required: true