Make Curator 8 a legacy version (#2023)

Author: shainaraskas

config/legacy-url-mappings.yml

@@ -138,7 +138,7 @@ mappings:
     legacy_versions: *stack
   en/elasticsearch/client/curator/:
     product: curator
-    legacy_versions: [ '7.0', '6.0', '5.8', '5.7', '5.6', '5.5', '5.4', '5.3', '5.2', '5.1', '5.0', '4.3', '4.2', '4.1', '4.0', '3.5', '3.4', '3.3' ]
+    legacy_versions: [ '8.0', '7.0', '6.0', '5.8', '5.7', '5.6', '5.5', '5.4', '5.3', '5.2', '5.1', '5.0', '4.3', '4.2', '4.1', '4.0', '3.5', '3.4', '3.3' ]
   en/elasticsearch/client/eland/:
     product: eland
     legacy_versions: []

config/versions.yml

@@ -29,7 +29,7 @@ versioning_systems:
     base: 1.0
     current: 1.15.0
   curator:
-    base: 8.0
+    base: 9.0
     current: 9.0.0
 
   # Serverless