Add OVA script support

1. Ensure that system_template and script are not nullable in the DB.
2. Ensure that the CLI and API enforce the above and clean up CLI
arguments for profile add.
3. Ensure that, before uploading OVAs, a 'default_ova' provisioning
script is present.
4. Use the 'default_ova' script for new OVA uploads.
5. Ensure that OVA details are properly added to the vm_data dict in the
provisioner vmbuilder.

api-daemon/pvcapid/flaskapi.py

@@ -7352,11 +7352,19 @@ class API_Provisioner_Profile_Root(Resource):
                 "required": True,
                 "helptext": "A profile type must be specified.",
             },
-            {"name": "system_template"},
+            {
+                "name": "system_template",
+                "required": True,
+                "helptext": "A system_template must be specified.",
+            },
             {"name": "network_template"},
             {"name": "storage_template"},
             {"name": "userdata"},
-            {"name": "script"},
+            {
+                "name": "script",
+                "required": True,
+                "helptext": "A script must be specified.",
+            },
             {"name": "ova"},
             {"name": "arg", "action": "append"},
         ]
@@ -7385,12 +7393,12 @@ class API_Provisioner_Profile_Root(Resource):
           - in: query
             name: script
             type: string
-            required: false
+            required: true
             description: Script name
           - in: query
             name: system_template
             type: string
-            required: false
+            required: true
             description: System template name
           - in: query
             name: network_template
@@ -7473,11 +7481,19 @@ class API_Provisioner_Profile_Element(Resource):
                 "required": True,
                 "helptext": "A profile type must be specified.",
             },
-            {"name": "system_template"},
+            {
+                "name": "system_template",
+                "required": True,
+                "helptext": "A system_template must be specified.",
+            },
             {"name": "network_template"},
             {"name": "storage_template"},
             {"name": "userdata"},
-            {"name": "script"},
+            {
+                "name": "script",
+                "required": True,
+                "helptext": "A script must be specified.",
+            },
             {"name": "ova"},
             {"name": "arg", "action": "append"},
         ]
@@ -7511,17 +7527,17 @@ class API_Provisioner_Profile_Element(Resource):
           - in: query
             name: network_template
             type: string
-            required: true
+            required: false
             description: Network template name
           - in: query
             name: storage_template
             type: string
-            required: true
+            required: false
             description: Storage template name
           - in: query
             name: userdata
             type: string
-            required: true
+            required: false
             description: Userdata template name
           - in: query
             name: ova