chore(java): ignore return code 28 in README autosynth job (googleapi…

…s#303)

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Synth log will be available here:
https://source.cloud.google.com/results/invocations/d9de2598-aedb-41e8-ba93-66623c5d1556/targets

- [ ] To automatically regenerate this PR, check this box.

Source-Link: googleapis/synthtool@7db8a6c

java-resourcemanager/.kokoro/readme.sh

@@ -28,9 +28,18 @@ echo "https://${GITHUB_TOKEN}:@github.com" >> ~/.git-credentials
 git config --global credential.helper 'store --file ~/.git-credentials'
 
 python3.6 -m pip install git+https://github.com/googleapis/synthtool.git#egg=gcp-synthtool
+
+set +e
 python3.6 -m autosynth.synth \
     --repository=googleapis/java-resourcemanager \
     --synth-file-name=.github/readme/synth.py \
     --metadata-path=.github/readme/synth.metadata \
     --pr-title="chore: regenerate README" \
-    --branch-suffix="readme"
+    --branch-suffix="readme"
+
+# autosynth returns 28 to signal there are no changes
+RETURN_CODE=$?
+if [[ ${RETURN_CODE} -ne 0 && ${RETURN_CODE} -ne 28 ]]
+then
+    exit ${RETURN_CODE}
+fi

java-resourcemanager/synth.metadata

@@ -4,14 +4,14 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/java-resourcemanager.git",
-        "sha": "668c6a3f2c3848d1de191134ec79eb38356c50cf"
+        "sha": "125162a103e568d102e7a65fd6c744117e3983a1"
       }
     },
     {
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "c7824ea48ff6d4d42dfae0849aec8a85acd90bd9"
+        "sha": "7db8a6c5ffb12a6e4c2f799c18f00f7f3d60e279"
       }
     }
   ],