Consistently use quotes in YAML samples

[philwebb]

As raised in #28671 we have some YAML in the docs that doesn't quote strings. I think most of the samples do so we should probably align. Using quotes helps prevent the "norway" problem.

[viktorardelean]

Can I work on this issue?
As a first time contributor I think this would be a good start!

[viktorardelean]

Here are all the YAML files that I found on the 2.6.x branch:

• spring-boot\spring-boot-project\spring-boot-actuator\src\test\resources\db\changelog\db.changelog-master-backup.yaml

• spring-boot\spring-boot-project\spring-boot-actuator\src\test\resources\db\changelog\db.changelog-master.yaml

• spring-boot\spring-boot-project\spring-boot-actuator-autoconfigure\src\test\resources\db\changelog\db.changelog-master.yaml

• spring-boot\spring-boot-project\spring-boot-autoconfigure\src\test\resources\hazelcast.yaml

• spring-boot\spring-boot-project\spring-boot-autoconfigure\src\test\resources\db\changelog\db.changelog-city.yaml

• spring-boot\spring-boot-project\spring-boot-autoconfigure\src\test\resources\db\changelog\db.changelog-master.yaml

• spring-boot\spring-boot-project\spring-boot-autoconfigure\src\test\resources\org\springframework\boot\autoconfigure\hazelcast\hazelcast-client-specific.yaml

• spring-boot\spring-boot-project\spring-boot-autoconfigure\src\test\resources\org\springframework\boot\autoconfigure\hazelcast\hazelcast-specific.yaml

• spring-boot\spring-boot-project\spring-boot-devtools\src\test\resources\org\springframework\boot\devtools\env\spring-devtools.yaml

• spring-boot\spring-boot-tests\spring-boot-smoke-tests\spring-boot-smoke-test-data-r2dbc-liquibase\src\main\resources\db\changelog\db.changelog-master.yaml

• spring-boot\spring-boot-tests\spring-boot-smoke-tests\spring-boot-smoke-test-liquibase\src\main\resources\db\changelog\db.changelog-master.yaml

Would adding quotes to all the spring values in those YAML files resolve this issue?

[wilkinsona]

@viktorardelean The aim of this issue is to consistently use quotes in the YAML examples in the documentation. They can be found in the various .adoc files within spring-boot-project/spring-boot-docs/src/docs/asciidoc. Searching for source,yaml within the .adoc files should be a reliable way of identifying each piece of example YAML configuration. If you are interested in contributing the necessary changes, please use 2.6.x as the base branch.

[viktorardelean]

@wilkinsona Thank you very much for the valuable information.
I have raised my PR: #28911

[snicoll]

Closing in favor of PR #28911