build: Add generate-files-bot config

Source-Author: Daniel Bankhead <dan@danielbankhead.com>
Source-Date: Tue Apr 27 15:33:07 2021 -0700
Source-Repo: googleapis/synthtool
Source-Sha: 04573fd73f56791c659832aa84d35a4ec860d6f7
Source-Link: googleapis/synthtool@04573fd

.github/generated-files-bot.yml

@@ -0,0 +1,13 @@
+generatedFiles:
+- path: '.kokoro/**'
+  message: '`.kokoro` files are templated and should be updated in [`synthtool`](https://github.com/googleapis/synthtool)'
+- path: '.github/CODEOWNERS'
+  message: 'CODEOWNERS should instead be modified via the `codeowner_team` property in .repo-metadata.json'
+- path: '.github/workflows/**'
+  message: '`.github/workflows` (GitHub Actions) should be updated in [`synthtool`](https://github.com/googleapis/synthtool)'
+- path: '.github/generated-files-bot.+(yml|yaml)'
+  message: '`.github/generated-files-bot.(yml|yaml)` should be updated in [`synthtool`](https://github.com/googleapis/synthtool)'
+- path: 'README.md'
+  message: '`README.md` is managed by [`synthtool`](https://github.com/googleapis/synthtool). However, a partials file can be used to update the README, e.g.: https://github.com/googleapis/nodejs-storage/blob/master/.readme-partials.yaml'
+- path: 'samples/README.md'
+  message: '`samples/README.md` is managed by [`synthtool`](https://github.com/googleapis/synthtool). However, a partials file can be used to update the README, e.g.: https://github.com/googleapis/nodejs-storage/blob/master/.readme-partials.yaml'

synth.metadata

@@ -4,7 +4,7 @@
       "git": {
         "name": ".",
         "remote": "https://github.com/googleapis/nodejs-spanner.git",
-        "sha": "19033207ac4eddbc5bddb9e67c1eaf31d6c0f43a"
+        "sha": "f2056a16cd79314f46b61a8cbea8345cd68a5efd"
       }
     },
     {
@@ -19,7 +19,7 @@
       "git": {
         "name": "synthtool",
         "remote": "https://github.com/googleapis/synthtool.git",
-        "sha": "c6706ee5d693e9ae5967614170732646590d8374"
+        "sha": "04573fd73f56791c659832aa84d35a4ec860d6f7"
       }
     }
   ],