Added fluent-bit instance input schema ...

See merge request nexedi/slapos!1288

software/fluent-bit/instance-input-schema.json

+{
+  "$schema": "https://json-schema.org/draft/2019-09/schema",
+  "description": "Parameters to instantiate Fluent-bit",
+  "type": "object",
+  "configuration": {
+    "input": {
+      "description": "The desired fluent-bit input, which defines in fluent-bit's configuration the inputs.",
+      "type": "object",
+      "default": ""
+    },
+    "output": {
+      "description": "The desired fluent-bit output, which defines in fluent-bit's configuration the outputs.",
+      "type": "object",
+      "default": ""
+    }
+  }
+}

software/fluent-bit/software.cfg.json

+{
+  "name": "Fluent-bit",
+  "description": "Fluent-bit",
+  "serialisation": "xml",
+  "software-type": {
+    "default": {
+      "title": "Default",
+      "description": "Fluent-bit",
+      "request": "instance-input-schema.json",
+      "index": 0
+    }
+  }
+}