Capability To Configure GKE Maintenance Window

What's Changed

• Adding capability to configure GKE maintenance window by @mishah334 in #66

Full Changelog: 1.2.5...1.2.6

Fixing Release channel of GKE

Setting release channel of GKE to stable

Full Changelog: 1.2.4...1.2.5

Dynamic Port Allocation

Adding support for Dynamic Port Allocation. Related issue: #4874

Support for new version of Istio

• Adding Istio firewall rule.
• Adding changes to support the new Terraform version and providers.
• Updating pre-commit hooks.
• Updating CI to use pre-commit.

1.2.2

ENHANCEMENTS:

• PostgreSQL version can be managed as a part of tf variable in module
• support for token authentication
• improvements on tf module

1.2.1

ENHANCEMENTS:

• Bump default GKE version to 1.20.9-gke.1001
• Basic authentication is deprecated and has been removed in GKE 1.19
• Require Terraform >= 0.13

Terraform Enhancements

minimum required terraform version set to 13
changes to spotinst and acme provider
addressed issues with node pool timeout

GKE Channels

This version all GKE channels to be used, and implements a dynamic blue/green node pool setup.

1.0.265

Remove block we don't want to use

1.0.264

Improve node pool management with Spot enabled