rename scheme to prefix

Author: nastra

open-api/rest-catalog-open-api.py

@@ -1424,7 +1424,10 @@ class Schema(StructType):
 
 class ADLSCredential(BaseModel):
     type: Literal['adls']
-    scheme: str
+    prefix: Optional[str] = Field(
+        None,
+        description='Indicates a storage location prefix where the credential is relevant. Clients should choose the most specific prefix if several credentials of the same type are available.',
+    )
     sas_token: str = Field(..., alias='sas-token')
     expires_at_ms: int = Field(
         ...,
@@ -1435,7 +1438,10 @@ class ADLSCredential(BaseModel):
 
 class GCSCredential(BaseModel):
     type: Literal['gcs']
-    scheme: str
+    prefix: Optional[str] = Field(
+        None,
+        description='Indicates a storage location prefix where the credential is relevant. Clients should choose the most specific prefix if several credentials of the same type are available.',
+    )
     token: str
     expires_at_ms: int = Field(
         ...,
@@ -1446,7 +1452,10 @@ class GCSCredential(BaseModel):
 
 class S3Credential(BaseModel):
     type: Literal['s3']
-    scheme: str
+    prefix: Optional[str] = Field(
+        None,
+        description='Indicates a storage location prefix where the credential is relevant. Clients should choose the most specific prefix if several credentials of the same type are available.',
+    )
     access_key_id: str = Field(..., alias='access-key-id')
     secret_access_key: str = Field(..., alias='secret-access-key')
     session_token: str = Field(..., alias='session-token')

open-api/rest-catalog-open-api.yaml

@@ -3109,15 +3109,16 @@ components:
         - $ref: '#/components/schemas/Credential'
       required:
         - type
-        - scheme
         - sas-token
         - expires-at-ms
       properties:
         type:
           type: string
           enum: [ "adls" ]
-        scheme:
+        prefix:
           type: string
+          description: Indicates a storage location prefix where the credential is relevant. Clients should choose the most
+            specific prefix if several credentials of the same type are available.
         sas-token:
           type: string
         expires-at-ms:
@@ -3132,15 +3133,16 @@ components:
         - $ref: '#/components/schemas/Credential'
       required:
         - type
-        - scheme
         - token
         - expires-at-ms
       properties:
         type:
           type: string
           enum: [ "gcs" ]
-        scheme:
+        prefix:
           type: string
+          description: Indicates a storage location prefix where the credential is relevant. Clients should choose the most
+            specific prefix if several credentials of the same type are available.
         token:
           type: string
         expires-at-ms:
@@ -3154,7 +3156,6 @@ components:
         - $ref: '#/components/schemas/Credential'
       required:
         - type
-        - scheme
         - access-key-id
         - secret-access-key
         - session-token
@@ -3163,8 +3164,10 @@ components:
         type:
           type: string
           enum: [ "s3" ]
-        scheme:
+        prefix:
           type: string
+          description: Indicates a storage location prefix where the credential is relevant. Clients should choose the most
+            specific prefix if several credentials of the same type are available.
         access-key-id:
           type: string
         secret-access-key: