Sample code to add AWS provider in a service catalog in CloudForms

add_aws_provider.rb

require 'rest-client'
require 'json'

servername = 'cf'
username = 'admin'
password = 'smartvm'

url = "https://#{servername}/api/providers"

post_params = {
  :name => $evm.root['dialog_name'],
  :type => "ManageIQ::Providers::Amazon::CloudManager",

  #:zone => { :id => "1000000000001" },
  :provider_region => "ap-southeast-1",
  :credentials =>  {
    :userid => $evm.root['dialog_aws_access_key_id'],
    :password => $evm.root['dialog_aws_secret_access_key']
  }
}.to_json


begin
  rest_return = RestClient::Request.execute(
    method: :post,
    url: url,
    :user => username,
    :password => password,
    :headers => {:accept => :json},
    :payload => post_params,
    verify_ssl: false)

  result = JSON.parse(rest_return)
  $evn.log(:info, result)
rescue => e
  $evm.log(:error, "Error: #{e}")
end