Include data.versions in platforms endpoint return payload

Resolves: AlmaLinux/build-system#484

Author: javihernandez

alws/schemas/platform_schema.py

@@ -1,6 +1,6 @@
 import typing
 
-from pydantic import BaseModel
+from pydantic import BaseModel, root_validator
 
 from alws.schemas.repository_schema import RepositoryCreate
 
@@ -54,6 +54,16 @@ class Platform(BaseModel):
     pgp_key: typing.Optional[str] = None
     arch_list: typing.List[str]
     modularity: typing.Optional[typing.Dict] = None
+    # We're only going to take versions from 'data' column
+    data: typing.Optional[typing.Dict[str, typing.Any]] = None
+
+    @root_validator(pre=True)
+    def filter_data_to_versions_only(cls, values):
+        raw_data = values.data if hasattr(values, 'data') else {}
+        versions = raw_data.get("versions")
+
+        values.data = {"versions": versions} if versions else {}
+        return values
 
     class Config:
         from_attributes = True