chore: use CLOUD_JAVA_BOT_TOKEN in generate_new_client.yaml (#10234)

* Use `CLOUD_JAVA_BOT_TOKEN` in generate_new_client.yaml

* split title and description of commit/pr

* try github.token for authoring the PR

* include calling user in pr description, restore cloud java bot token

.github/workflows/generate_new_client.yaml

@@ -100,7 +100,7 @@ jobs:
           echo "::set-output name=new_library_args::${arguments}"
           echo "${arguments} --googleapis-gen-url=\"${GOOGLEAPIS_GEN_URL}\"" | xargs python generation/new_client/new-client.py generate
         env:
-          GOOGLEAPIS_GEN_URL: https://yoshi-approver:${{ secrets.YOSHI_CODE_BOT_TOKEN }}@github.com/googleapis/googleapis-gen.git
+          GOOGLEAPIS_GEN_URL: https://cloud-java-bot:${{ secrets.CLOUD_JAVA_BOT_TOKEN }}@github.com/googleapis/googleapis-gen.git
           API_SHORTNAME: ${{ github.event.inputs.api_shortname }}
           NAME_PRETTY: ${{ github.event.inputs.name_pretty }}
           PROTO_PATH: ${{ github.event.inputs.proto_path }}
@@ -123,25 +123,24 @@ jobs:
           branch_name="new-library/${{ github.event.inputs.api_shortname }}-${random_id}"
           git checkout -b "${branch_name}"
           git add --all
-          git commit -m "feat: [${API_SHORTNAME}] new module for ${API_SHORTNAME}
-
+          commit_message="feat: [${API_SHORTNAME}] new module for ${API_SHORTNAME}"
+          git commit -m "${commit_message}"
+          git remote add monorepo https://${{ github.actor }}:${{ github.token }}@github.com/${{ github.repository }}.git
+          git fetch -q --unshallow monorepo
+          git push -f monorepo "${branch_name}"
 
-          Generated with https://github.com/googleapis/google-cloud-java/actions/workflows/generate_new_client.yaml
+          # create PR
+          pr_body="Generated by @${USERNAME} via [generate_new_client.yaml](https://github.com/googleapis/google-cloud-java/actions/workflows/generate_new_client.yaml)
 
           Command used:
 
           \`\`\`
           python generation/new_client/new-client.py generate ${GENERATION_ARGUMENTS}
           \`\`\`"
-          git remote add monorepo https://${{ github.actor }}:${{ github.token }}@github.com/${{ github.repository }}.git
-          git fetch -q --unshallow monorepo
-          git push -f monorepo "${branch_name}"
-
-          # create PR
-          gh pr create --fill --head "${branch_name}"
+          gh pr create --title "${commit_message}" --label "owlbot:run" --head "${branch_name}" --body "${pr_body}"
         env:
           USERNAME: ${{ github.actor }}
           API_SHORTNAME: ${{ github.event.inputs.api_shortname }}
           GENERATION_ARGUMENTS: ${{ steps.generation.outputs.new_library_args }}
-          GH_TOKEN: ${{ secrets.YOSHI_CODE_BOT_TOKEN }}
+          GH_TOKEN: ${{ secrets.CLOUD_JAVA_BOT_TOKEN }}