Bringing in PR 1210

[monde]

• Bringing in @ nickrmc83's code in PR "Enable okta_password authenticator for okta_policy_mfa" Enable okta_password authenticator for okta_policy_mfa #1210
• Adding test for Enable okta_password authenticator for okta_policy_mfa #1210
• Mild provider config refactor to DRY up having a SDK client in the test harness for pre-checks

Testing on an OIE org:

$ go clean -testcache
$ TF_ACC=1 go test -tags unit -mod=readonly -test.v -run ^TestAccOktaMfaPolicy_PR_1210$ ./okta 2>&1
2023/01/17 06:44:17 [INFO]  running with default http client
=== RUN   TestAccOktaMfaPolicy_PR_1210
--- PASS: TestAccOktaMfaPolicy_PR_1210 (4.34s)
PASS
ok      github.com/okta/terraform-provider-okta/okta    4.693s

$ TF_ACC=1 go test -tags unit -mod=readonly -test.v -run ^TestAccOktaMfaPolicy_Issue_1176$ ./okta 2>&1
2023/01/18 09:10:31 [INFO]  running with default http client
=== RUN   TestAccOktaMfaPolicy_Issue_1176
--- PASS: TestAccOktaMfaPolicy_Issue_1176 (9.66s)
PASS
ok      github.com/okta/terraform-provider-okta/okta    11.532s

Testing on an Classic org

$ go clean -testcache
$ TF_ACC=1 go test -tags unit -mod=readonly -test.v -run ^TestAccOktaMfaPolicy_PR_1210$ ./okta 2>&1
2023/01/17 06:45:19 [INFO]  running with default http client
=== RUN   TestAccOktaMfaPolicy_PR_1210
    provider_test.go:100: "TestAccOktaMfaPolicy_PR_1210" test is for OIE orgs only
--- SKIP: TestAccOktaMfaPolicy_PR_1210 (0.20s)
PASS
ok      github.com/okta/terraform-provider-okta/okta    0.592s

[monde]

Released in https://github.com/okta/terraform-provider-okta/releases/tag/v3.41.0