* Fix the missing locality_lb_policy value and add validation for it
* Added variables, dynamic blocks and validation to support locality_lb_policy/ies
* Formatting
* tfdoc generation
* Fix net-lb-app-ext readme
* Fixes for Ludo, coalesce and brevity
* fmt
* Revert null check due to failing tests
---------
Co-authored-by: Jack Lever <jack@thelevers.com.au>
Co-authored-by: Ludo <ludomagno@google.com>
* updates
- set client_tls_policy as optional
- set subject_alt_names as optional
* update
run cmd ./tools/tfdoc.py modules/net-lb-app-ext to fix linting error
* added disable_default_snat variable
* add an option to disable default snat
* tfdoc readme
* change order of variables
* modify variable to exist within vpc_config and have a null default,
creating a conditional dynamic block to provide backward compatability
* defining disable snat variable in autopilot as it is also an option
* fix conditional
* update readme
* null is implied in optional bool
* update readmes
* expose aws_v4_authentication configuration option
* terraform fmt
* update readme
* use dynamic block and optional for new variable
## 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
