Make AWS SSH security group CIDR configurable

Hi, i noticed the below in the Terraform template:

darknode-cli/cmd/provider/aws_template.go

Lines 78 to 84 in 730376d

    
             // SSH 
        
             ingress { 
        
               from_port   = 22 
        
               to_port     = 22 
        
               protocol    = "tcp" 
        
               cidr_blocks = ["0.0.0.0/0"] 
        
             }

If there is no other use apart from the initial setup and maintenance, SSH should not be exposed to the wider internet.

It would be nice to have an option to change that to another custom CIDR block.

Thank you

	// SSH
	ingress {
	from_port = 22
	to_port = 22
	protocol = "tcp"
	cidr_blocks = ["0.0.0.0/0"]
	}