(DOCSP-20845): Deprecate AOSB and move to Legacy Docs site (#88)

* (DOCSP-20845):  Deprecate AOSB and move to Legacy Docs site

* Update snooty.toml

Co-authored-by: rayangler <[email protected]>

Co-authored-by: rayangler <[email protected]>

Author: melissamahoney-mongodb

snooty.toml

@@ -14,3 +14,4 @@ mms = ["v4.2", "v4.0", "v3.6", "v3.4", "v2.0", "v1.8", "v1.6", "v1.5", "v1.4", "
 mongocli = ["v0.5.0", "v0.2.0", "v0.1.0", "v0.0.4", "v0.0.3"]
 ruby-driver = ["v2.3", "v2.2", "v2.0", "v1.x"]
 spark-connector = ["v2.0", "v1.1"]
+atlas-open-service-broker = ["master"]