Run tests in parallel (grem11n#121)

Add routes for VPC + Subnet IPv6 space (grem11n#116)

* Add routes for VPC + Subnet IPv6 space

VPC's can be setup as dual stack which will allow for them to have ipv6
addresses as well as ipv4 ones. This will make it so if vpc's get paried
that do have ipv6 addressing on them that the route tables also get
setup with the ipv6 addresses.

* Add a test for when only 1 side has ipv6 addresses

Update AWS provider version (grem11n#103)

* update provider version

* change condition

* Update provider.tf

Co-authored-by: Mohsen Sadeghzade <techieforfun@protonmail.com>

---------

Co-authored-by: Mohsen Sadeghzade <techieforfun@protonmail.com>

Routes for associated CIDRs

AWS Classic Deprecation

Use the latest TF for tests (grem11n#88)

* Use the latest TF for tests

* Use only Go 1.17

Update issue templates

Upgrade to TF0.15 (grem11n#72)

* Upgrade to TF0.15

* Ignore docs for the builds

Pre-release README (grem11n#74)

Upgrade to TF0.15 (grem11n#72)

* Upgrade to TF0.15

* Ignore docs for the builds