Fix location in dialogflow

[slevenick]

New PR based on #5108 as the VCR steps have gotten out of date

If this PR is for Terraform, I acknowledge that I have:

• Searched through the issue tracker for an open issue that this either resolves or contributes to, commented on it to claim it, and written "fixes {url}" or "part of {url}" in this PR description. If there were no relevant open issues, I opened one and commented that I would like to work on it (not necessary for very small changes).
• Generated Terraform, and ran make test and make lint to ensure it passes unit and linter tests.
• Ensured that all new fields I added that can be set by a user appear in at least one example (for generated resources) or third_party test (for handwritten resources or update tests).
• Ran relevant acceptance tests (If the acceptance tests do not yet pass or you are unable to run them, please let your reviewer know).
• Read the Release Notes Guide before writing my release note below.

Release Note Template for Downstream PRs (will be copied)

dialogflow: added support for location based dialogflow resources

[slevenick]

/gcbrun

[modular-magician]

Hi! I'm the modular magician. Your PR generated some diffs in downstreams - here they are.

Diff report:

Terraform GA: Diff ( 8 files changed, 356 insertions(+), 2 deletions(-))
Terraform Beta: Diff ( 8 files changed, 356 insertions(+), 2 deletions(-))
TF Validator: Diff ( 10 files changed, 25 insertions(+), 25 deletions(-))

[modular-magician]

Tests analytics

Total tests: 1971
Passed tests 1713
Skipped tests: 237
Failed tests: 21

Action taken

Triggering VCR tests in RECORDING mode for the following tests that failed during VCR: TestAccAccessContextManager|TestAccServiceNetworkingPeeredDNSDomain_basic|TestAccFirebaserulesRelease_BasicRelease|TestAccDialogflowCXVersion_dialogflowcxVersionFullExample|TestAccDialogflowCXPage_dialogflowcxPageFullExample|TestAccDialogflowCXIntent_dialogflowcxIntentFullExample|TestAccDialogflowCXFlow_dialogflowcxFlowFullExample|TestAccDialogflowCXEnvironment_dialogflowcxEnvironmentFullExample|TestAccDialogflowCXEntityType_dialogflowcxEntityTypeFullExample|TestAccDialogflowCXAgent_dialogflowcxAgentFullExample|TestAccDialogflowCXVersion_update|TestAccDialogflowCXPage_update|TestAccDialogflowCXIntent_update|TestAccDialogflowCXEntityType_update|TestAccDialogflowCXFlow_update|TestAccDialogflowCXAgent_update|TestAccDialogflowCXEnvironment_update|TestAccContainerCluster_withAuthenticatorGroupsConfig|TestAccComputeGlobalForwardingRule_externalCdnLbWithBackendBucketExample|TestAccBigQueryDataTable_bigtable|TestAccDatasourceGoogleServiceNetworkingPeeredDnsDomain_basic

[modular-magician]

Tests passed during RECORDING mode:
TestAccDatasourceGoogleServiceNetworkingPeeredDnsDomain_basic[view]
TestAccDialogflowCXAgent_update[view]
TestAccServiceNetworkingPeeredDNSDomain_basic[view]
TestAccFirebaserulesRelease_BasicRelease[view]
TestAccDialogflowCXVersion_update[view]
TestAccDialogflowCXPage_update[view]
TestAccDialogflowCXIntent_update[view]
TestAccDialogflowCXFlow_update[view]
TestAccDialogflowCXEnvironment_update[view]
TestAccDialogflowCXEntityType_update[view]
TestAccDialogflowCXEnvironment_dialogflowcxEnvironmentFullExample[view]
TestAccDialogflowCXVersion_dialogflowcxVersionFullExample[view]
TestAccDialogflowCXPage_dialogflowcxPageFullExample[view]
TestAccDialogflowCXIntent_dialogflowcxIntentFullExample[view]
TestAccDialogflowCXEntityType_dialogflowcxEntityTypeFullExample[view]
TestAccDialogflowCXAgent_dialogflowcxAgentFullExample[view]
TestAccBigQueryDataTable_bigtable[view]
TestAccDialogflowCXFlow_dialogflowcxFlowFullExample[view]

Tests failed during RECORDING mode:
TestAccAccessContextManager[view]
TestAccContainerCluster_withAuthenticatorGroupsConfig[view]
TestAccComputeGlobalForwardingRule_externalCdnLbWithBackendBucketExample[view]

Please fix these to complete your PR
View the build log or the debug log for each test

[modular-magician]

I have triggered VCR tests in RECORDING mode for the following tests that failed during VCR: TestAccDatasourceGoogleServiceNetworkingPeeredDnsDomain_basic|TestAccAccessContextManager|TestAccComputeGlobalForwardingRule_externalCdnLbWithBackendBucketExample|TestAccComputeForwardingRule_update|TestAccContainerCluster_withAuthenticatorGroupsConfig|TestAccDialogflowCXAgent_dialogflowcxAgentFullExample|TestAccDialogflowCXEntityType_dialogflowcxEntityTypeFullExample|TestAccDialogflowCXEnvironment_dialogflowcxEnvironmentFullExample|TestAccDialogflowCXIntent_dialogflowcxIntentFullExample|TestAccDialogflowCXFlow_dialogflowcxFlowFullExample|TestAccDialogflowCXPage_dialogflowcxPageFullExample|TestAccDialogflowCXVersion_dialogflowcxVersionFullExample|TestAccDialogflowCXEntityType_update|TestAccDialogflowCXAgent_update|TestAccDialogflowCXIntent_update|TestAccDialogflowCXFlow_update|TestAccDialogflowCXPage_update|TestAccDialogflowCXEnvironment_update|TestAccDialogflowCXVersion_update|TestAccFirebaserulesRelease_BasicRelease You can view the result here: https://ci-oss.hashicorp.engineering/viewQueued.html?itemId=277652

[rileykarson]

Minor q on operations!

[slevenick]

Closing in favor of #5922 as I can't update this