* support reading token from file via config

* remove empty file

* simplify token validation and add unit tests

* add unit tests for transport credentials funtions

* address PR feedback

* proto updates

* fix function name

* fix lint error: lll

* add missing PR feedback

* remove error log message

* fix unit test

* Fix apk test package naming (#961)

* modify alpine package name:
nginx-agent-3.0.0_1234 -> nginx-agent-3.0.0.1234

* protoc-gen update

* Update agent config defaults and format (#959)

* update config defaults and format

* Add config apply request queue (#949)

* add unit tests for transport credentials funtions

* fix test name

* fix error message

* fix lint error: lll

* modify error messages

* remove error logging and modify messages

* fall back to token field if error occurs when reading file

* fix bad merge

* restarting gRPC conn

* remove code from testing

* fix lint errors: whitespace, revive

* use tokenpath as config option, fixes problem with cli param parsing

* correct yaml key in AuthConfig

* proto updates

---------

Co-authored-by: aphralG <[email protected]>
Co-authored-by: Donal Hurley <[email protected]>

* support reading token from file via config

* remove empty file

* simplify token validation and add unit tests

* add unit tests for transport credentials funtions

* address PR feedback

* proto updates

* fix function name

* fix lint error: lll

* add missing PR feedback

* remove error log message

* fix unit test

* Fix apk test package naming (#961)

* modify alpine package name:
nginx-agent-3.0.0_1234 -> nginx-agent-3.0.0.1234

* protoc-gen update

* Update agent config defaults and format (#959)

* update config defaults and format

* Add config apply request queue (#949)

* add unit tests for transport credentials funtions

* fix test name

* fix error message

* fix lint error: lll

* modify error messages

* remove error logging and modify messages

* fall back to token field if error occurs when reading file

* fix bad merge

* restarting gRPC conn

* remove code from testing

* fix lint errors: whitespace, revive

* add new topic for handling Token file updates

* add CredentialWatcherService

* adding initial watcher for credential files

* trigger connection reset after credential update

* added ConnectionResetTopic and event processing

* Automatically add token-path to Credential watcher

* add function to check credential paths defined in agent config

* fix lint

* use tokenpath as config option, fixes problem with cli param parsing

* add CredentialWatcherService + tests

* fix lint errors

* updates to generated files

* Send create connection after disconnect from management plane (#967)

* correct yaml key in AuthConfig

* fix: flaky test (#968)

`TestConvertToStructs` was occasionally failing because it was expecting `range` over a `map` to be a consistent order, but per [spec]:

> The iteration order over maps is not specified and is not guaranteed to be the same from one iteration to the next.

Uses `ElementsMatch` so the test passes even when the order of elements is different.

[spec]: https://go.dev/ref/spec#RangeClause

* update tests

* update tests

* wait for create connection

* PR feedback

* fix race condition

* clean up

* clean up

* update grpc connection in command and file plugins

* move log message and fix file_plugin_test.go

* fix lint

* handle command and file service client updates after grpc reset

* update FakeCommandService

* add unit tests

* fix bad test

* formatting

* remove test

* increase timeout before checking connection after restart

* set isConnected to false when handling subscribe errors

* increase code coverage

* lint fix

* fieldalignment

* remove unused fake

* PR feedback

* update fake command service

* more PR feedback

* PR feedback: disable watcher during config apply

* don't pause credential watcher during config apply

* debug log messages

* Add mutex around updating client in the CommandService

* undo change to metric name

* update test

* lock watcher when replacing grpc connection

* add lock around subscibe client access

* fix lint error

* unlock watcher mutex in error case

* return with no blank line

* lint error ?

* handle rename cases

* remove unneccessary cases from switch

* rewrite switch as if

* handling kubernetes secret update case

* fix test

* save connection status when resetting file manager service

---------

Co-authored-by: aphralG <[email protected]>
Co-authored-by: Donal Hurley <[email protected]>
Co-authored-by: Ryan Davis <[email protected]>
Co-authored-by: Aphral Griffin <[email protected]>