Bump test terraform to tf 1.0 (gruntwork-io#1726)

* Test against terraform 1.0

* Bump internal terraform version to the latest we can use as a library

* Add info on terraform version supported

Should be continue, not return (gruntwork-io#1728)

* Should be continue, not return

* Remove plan accidentally checked in files

Resolves gruntwork-io#1369 (gruntwork-io#1718)

* making the AWS ARN partition value a dynamic lookup and removing hard-coding of ":aws:" to support GovCloud and other paritions. Resolves gruntwork-io#1369

* Moving from split to AWS SDK ARN parsing function and errant newline cleanup

Co-authored-by: Ryan Kennedy <ryan.kennedy@smartsheet.com>

Resolves gruntwork-io#1369 (gruntwork-io#1718)

* making the AWS ARN partition value a dynamic lookup and removing hard-coding of ":aws:" to support GovCloud and other paritions. Resolves gruntwork-io#1369

* Moving from split to AWS SDK ARN parsing function and errant newline cleanup

Co-authored-by: Ryan Kennedy <ryan.kennedy@smartsheet.com>

Expose include config attributes (gruntwork-io#1716)

* Expose included config as referenceable variable in terragrunt config

* Fix build failure

* Make availability of included config toggleable with a var

* Fix bug where include functions were not working in child config

Replace multierror (gruntwork-io#1703)

* add go-multierror to modules

* replace multierror in /cli

* remove custom multierror from /shell, /configstack, /test

* remove errors/multierror.go

* refactor the fix for gruntwork-io#459

* remove irrelevant comment

* update expected type in tests

Better error message for aws-provider-patch (gruntwork-io#1715)

update hclfmt documentation (gruntwork-io#1713)

Fix data type issue with aws-provider-patch (gruntwork-io#1714)

* Regression test for issue gruntwork-io#1709

* Use json as an intermediary representation for aws-provider-patch

* Fix unit tests

go.mod: update go-cty-yaml; update yamldecode regressions (gruntwork-…

…io#1706)

* add yamldecode test case for string that looks like a binary number

* go.mod: update go-cty-yaml

Co-authored-by: Andrey Kaipov <andreykaipov@users.noreply.github.com>