VLT091 plugin testing framework stepwise (#9270)

* Resolve merge conflicts and updates from running a test

* move testing/_test.go over to legacy

* updates

* Add core of plugin test framework Stepwise  (#9166)

* adding stepwise testing, but there are protocol buff error :/

* move file and update sdk/go.mo

* update/sync modules

* update from other branch

* update sdk/go.mod

* some cleanups after feedback

* remove enviornments from this PR

* update vendor

* change from running go mod tidy

* change from go mod tidy

* Update sdk/testing/stepwise/helpers.go

Co-authored-by: Michael Golowka <72365+pcman312@users.noreply.github.com>

* Update sdk/testing/stepwise/helpers.go

Co-authored-by: Michael Golowka <72365+pcman312@users.noreply.github.com>

* change panic to error

* Update sdk/testing/stepwise/helpers.go

return `nil` and not `err` at the end

Co-authored-by: Michael Golowka <72365+pcman312@users.noreply.github.com>

* Defer close() on successful Open of a file

* document the re-creation of steps

* Update sdk/testing/stepwise/stepwise.go

Co-authored-by: Michael Golowka <72365+pcman312@users.noreply.github.com>

* remove unused BarrierKeys()

* Update sdk/testing/stepwise/stepwise.go

Co-authored-by: Michael Golowka <72365+pcman312@users.noreply.github.com>

* updates from feedback

* fix return with bad arguments

* Rename things:

- StepOperation -> Operation
- StepwiseEnvironment -> Environment
- StepCheckFunc -> AssertionFunc
- step.Check -> step.Assert

* document the environment interface methods

* rename EnvironmentOptions to MountOptions

* rename Name to RegistryName

* remove ExpectError because it's redundant

* minor doc update

* Update sdk/testing/stepwise/stepwise.go

Co-authored-by: Michael Golowka <72365+pcman312@users.noreply.github.com>

* add checkShouldRun function

* remove redundant return

* remove vestigial PreCheck function

* add tt.Helper() to makeRequest

* minor code formatting and document 1-based index for log output of Steps

Co-authored-by: Michael Golowka <72365+pcman312@users.noreply.github.com>

* minor updates

* update sdk

* use local reference for api, vault dep

* Update sdk/testing/stepwise/stepwise.go

Co-authored-by: Calvin Leung Huang <cleung2010@gmail.com>

* Update sdk/testing/stepwise/stepwise.go

Co-authored-by: Calvin Leung Huang <cleung2010@gmail.com>

* cleanup some defer functions

* call fatal if environment setup fails, and don't call teardown

* defer re-setting client token in makeRequest

* Move legacy logicaltest back to testhelpers

* update mods and test files with go mod tidy

* go mod vendor

* remove relative replace directives

* restore old logical test location

* move declaration to main stepwise file

* remove index var and use i+1

* add testing for write, delete paths of makeRequest

* update stepwise core testing to do request counting

* remove unused methods

* Update sdk/testing/stepwise/stepwise.go

remove dead line

Co-authored-by: Alexander Bezobchuk <alexanderbez@users.noreply.github.com>

* Update sdk/testing/stepwise/stepwise.go

fix capitalization in code comment

Co-authored-by: Alexander Bezobchuk <alexanderbez@users.noreply.github.com>

* update code comments for SkipTeardown to clarify its use

* update stepwise

Co-authored-by: Michael Golowka <72365+pcman312@users.noreply.github.com>
Co-authored-by: Calvin Leung Huang <cleung2010@gmail.com>
Co-authored-by: Alexander Bezobchuk <alexanderbez@users.noreply.github.com>

builtin/logical/postgresql/backend_test.go

@@ -10,9 +10,9 @@ import (
 	"reflect"
 	"testing"
 
-	logicaltest "github.com/hashicorp/vault/helper/testhelpers/logical"
 	postgreshelper "github.com/hashicorp/vault/helper/testhelpers/postgresql"
 	"github.com/hashicorp/vault/sdk/logical"
+	logicaltest "github.com/hashicorp/vault/helper/testhelpers/logical"
 	"github.com/lib/pq"
 	"github.com/mitchellh/mapstructure"
 )