ConfirmApplyPlugin - allow it to be disabled

[kmanning]

This is super dangerous. Is this something we need? Can we make this safer?

@Library(['terraform-pipeline']) _

ConfirmApplyPlugin.disable()
Jenkinsfile.init(this)

def validate = new TerraformValidateStage()
def deployQa = new TerraformEnvironmentStage('qa')
def deployUat = new TerraformEnvironmentStage('uat')
def deployProd = new TerraformEnvironmentStage('prod')

// I'm no longer prompted before applying changes to an environment
validate.then(deployQa)
        .then(deployUat)
        .then(deployProd)
        .build()