* Allow terraform fixtures for examples
* Allow defining multiple fixtures, and named fixtures under tests/fixtures/
* Enable e2e for wiktorn
* Fix prepare_files call for e2e
* Move fixture to separate file, fix test
* Revert shallow-copying symlinks, performane penalty - 20%
* Update tfdoc.py to list used fixtures
---------
Co-authored-by: Wiktor Niesiobędzki <wiktorn@google.com>
## net-lb-int
* Fix error on apply of example:
```
Error creating RegionBackendService: googleapi: Error 400: Invalid value for field 'resource.backends[0].balancingMode': 'UTILIZATION'. Balancing mode must be CONNECTION for an INTERNAL backend service., invalid
```
* remove unused `balancing_mode` variable, as only one value is possible anyhow
## net-lb-ext
* update in the `backends` description
## net-lb-proxy-int
* update in the `backends` description
## net-lb-app-int
* added validation of `balancing_mode`
* fixed other validations
## net-lb-app-ext
* added validation of `balancing_mode`
* fixed other validations
* removed validation for `locality_lb_policy` as this variable is not used in this module
Closes: #1767
* `gke-cluster-standard`: add optional kube state metrics
* `gke-cluster-autopilot`: add optional kube state metrics
* FAST: add kube state metrics support for GKE
* blueprints/gke: add kube state metrics support
* Bump up the provider version to `v4.82.0`