VPC Module - Allow disabling of the internet gateway

[Jakeasaurus]

Description

Bool and var to allow for igw to not be created along with public route and route table.

Issue or Ticket

Fixes #106

Type of change

• Bugfix
• New feature
• Version update

Breaking Changes

• Yes
• No

Breaking Changes Description

This change will recreate the internet gateway, public route table, and default route associated with each. This is due to the index value of each resource changing. To work around this, you can use the move {} block in terraform to move the index of any existing igw, public route table, and public default route.

For example:

moved {
  from = module.vpc.aws_internet_gateway.igw
  to = module.vpc.aws_internet_gateway.igw[0]
}

TODOs

• Validate your code matches the style of the project.
• Update the docs.
• Validate all tests run successfull, including pre-commit checks.
• Include release notes and description. This should include both a summary of the changes and any necessary context.