use rest_connection w/out a config file

gistfile1.rb

## One way to change the rest_connection settings using Ruby code.

RightScale::Api::BaseExtend.class_eval <<-EOF
   @@connection.settings = {
     :user           => "someuser@rightscale.com",
     :pass           => "test1234_",
     :api_url        =>  "https://my.rightscale.com/api/acct/12345",
     :common_headers => {
       "X_API_VERSION" => "1.0"
     }
   }
EOF

This didn't work as is, I had to add:
RightScale::Api::BaseExtend.class_eval <<-EOF
+@@connection ||= RestConnection::Connection.new
@@connection.settings = {

Yet another follow up for this. Some calls continue to fail using original fix. You need to override connection settings in the Base class as well. The full "fix" seems to be:
RightScale::Api::BaseExtend.class_eval <<-EOF
@@connection ||= RestConnection::Connection.new
@@connection.settings = {
:user => "someuser@rightscale.com",
:pass => "test1234_",
:api_url => "https://my.rightscale.com/api/acct/12345",
:common_headers => {
"X_API_VERSION" => "1.0"
}
}
EOF
RightScale::Api::Base.class_eval <<-EOF
@@connection ||= RestConnection::Connection.new
@@connection.settings = {
:user => "someuser@rightscale.com",
:pass => "test1234_",
:api_url => "https://my.rightscale.com/api/acct/12345",
:common_headers => {
"X_API_VERSION" => "1.0"
}
}
EOF