chore: adding cloud-rad java xrefs (googleapis#461)

Source-Author: Emily Ball <emilyball@google.com>
Source-Date: Thu May 6 11:48:47 2021 -0700
Source-Repo: googleapis/synthtool
Source-Sha: 046994f491c02806aea60118e214a9edd67f5ab7
Source-Link: googleapis/synthtool@046994f

.kokoro/release/publish_javadoc11.sh

@@ -49,6 +49,13 @@ pushd target/docfx-yml
 python3 -m docuploader create-metadata \
  --name ${NAME} \
  --version ${VERSION} \
+ --xrefs devsite://java/gax \
+ --xrefs devsite://java/google-cloud-core \
+ --xrefs devsite://java/api-common \
+ --xrefs devsite://java/proto-google-common-protos \
+ --xrefs devsite://java/google-api-client \
+ --xrefs devsite://java/google-http-client \
+ --xrefs devsite://java/protobuf \
  --language java
 
 # upload yml to production bucket

synth.metadata

@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-spanner-jdbc.git",
-        "sha": "212d9d05c4f28ade71ab5484792188b11a5bcd8b"
+        "sha": "a657035b74e24e9fdfa12f91e5edf3c3e9b215ff"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "8285c2b4cdbc3771d031ad91e1c4ec9e55fff45d"
+        "sha": "046994f491c02806aea60118e214a9edd67f5ab7"
       }
     }
   ],
@@ -21,12 +21,9 @@
     ".github/ISSUE_TEMPLATE/feature_request.md",
     ".github/ISSUE_TEMPLATE/support_request.md",
     ".github/PULL_REQUEST_TEMPLATE.md",
-    ".github/blunderbuss.yml",
     ".github/generated-files-bot.yml",
     ".github/readme/synth.py",
-    ".github/release-please.yml",
     ".github/snippet-bot.yml",
-    ".github/sync-repo-settings.yaml",
     ".github/trusted-contribution.yml",
     ".github/workflows/approve-readme.yaml",
     ".github/workflows/auto-release.yaml",