build: update to latest build and docs config (#1306)

* changes without context

        autosynth cannot find the source of changes triggered by earlier changes in this
        repository, or by version upgrades to tools such as linters.

* chore: delete template for Node 8 tests

Source-Author: F. Hinkelmann <franziska.hinkelmann@gmail.com>
Source-Date: Tue Jul 14 19:56:02 2020 -0400
Source-Repo: googleapis/synthtool
Source-Sha: 388e10f5ae302d3e8de1fac99f3a95d1ab8f824a
Source-Link: googleapis/synthtool@388e10f

* chore: add config files for cloud-rad for node.js

* chore: add config files for cloud-rad for node.js

Generate and upload yaml files for ref docs

* Add gitattributes for json with comments

* Fix extra char

Source-Author: F. Hinkelmann <franziska.hinkelmann@gmail.com>
Source-Date: Thu Jul 16 12:19:00 2020 -0400
Source-Repo: googleapis/synthtool
Source-Sha: 21f1470ecd01424dc91c70f1a7c798e4e87d1eec
Source-Link: googleapis/synthtool@21f1470

* fix: rename _toc to toc

Source-Author: F. Hinkelmann <franziska.hinkelmann@gmail.com>
Source-Date: Tue Jul 21 10:53:20 2020 -0400
Source-Repo: googleapis/synthtool
Source-Sha: 99c93fe09f8c1dca09dfc0301c8668e3a70dd796
Source-Link: googleapis/synthtool@99c93fe

* fix: move gitattributes files to node templates

Source-Author: F. Hinkelmann <franziska.hinkelmann@gmail.com>
Source-Date: Thu Jul 23 01:45:04 2020 -0400
Source-Repo: googleapis/synthtool
Source-Sha: 3a00b7fea8c4c83eaff8eb207f530a2e3e8e1de3
Source-Link: googleapis/synthtool@3a00b7f

* chore(node): fix kokoro build path for cloud-rad

Source-Author: F. Hinkelmann <franziska.hinkelmann@gmail.com>
Source-Date: Wed Jul 29 00:28:42 2020 -0400
Source-Repo: googleapis/synthtool
Source-Sha: 89d431fb2975fc4e0ed24995a6e6dfc8ff4c24fa
Source-Link: googleapis/synthtool@89d431f

* docs: add links to the CHANGELOG from the README.md for Java and Node

Source-Author: Megan Potter <57276408+feywind@users.noreply.github.com>
Source-Date: Thu Jul 30 13:21:57 2020 -0700
Source-Repo: googleapis/synthtool
Source-Sha: 5936421202fb53ed4641bcb824017dd393a3dbcc
Source-Link: googleapis/synthtool@5936421

* build: --credential-file-override is no longer required

@chingor13 has configured our runtime environment, such that we no longer need to explicitly provide a credentials file.

How does this magic work, I didn't fully understand?

Source-Author: Benjamin E. Coe <bencoe@google.com>
Source-Date: Fri Aug 7 19:02:09 2020 -0700
Source-Repo: googleapis/synthtool
Source-Sha: 94421c47802f56a44c320257b2b4c190dc7d6b68
Source-Link: googleapis/synthtool@94421c4

* chore: update cloud rad kokoro build job

Delete `SharePoint` item from TOC.

Source-Author: F. Hinkelmann <franziska.hinkelmann@gmail.com>
Source-Date: Tue Aug 11 11:25:41 2020 -0400
Source-Repo: googleapis/synthtool
Source-Sha: bd0deaa1113b588d70449535ab9cbf0f2bd0e72f
Source-Link: googleapis/synthtool@bd0deaa

* build: perform publish using Node 12

Source-Author: Benjamin E. Coe <bencoe@google.com>
Source-Date: Wed Aug 12 12:12:29 2020 -0700
Source-Repo: googleapis/synthtool
Source-Sha: 5747555f7620113d9a2078a48f4c047a99d31b3e
Source-Link: googleapis/synthtool@5747555

* fix: move system and samples test from Node 10 to Node 12

Source-Author: sofisl <55454395+sofisl@users.noreply.github.com>
Source-Date: Thu Aug 20 18:29:50 2020 -0700
Source-Repo: googleapis/synthtool
Source-Sha: 05de3e1e14a0b07eab8b474e669164dbd31f81fb
Source-Link: googleapis/synthtool@05de3e1

* build: track flaky tests for "nightly", add new secrets for tagging

Source-Author: Benjamin E. Coe <bencoe@google.com>
Source-Date: Wed Aug 26 14:28:22 2020 -0700
Source-Repo: googleapis/synthtool
Source-Sha: 8cf6d2834ad14318e64429c3b94f6443ae83daf9
Source-Link: googleapis/synthtool@8cf6d28

Author: yoshi-automation

.gitattributes

@@ -1,3 +1,4 @@
 *.ts text eol=lf
 *.js text eol=lf
 protos/* linguist-generated
+**/api-extractor.json  linguist-language=JSON-with-Comments