The account access key can be found on your Controller via the License Management section. To check what it is go to your Controller GUI, log in, and then click on the cog wheel in the top right-hand corner and then go to License. Once there, then click on the "Account" tab, and then you'll see a hyperlink next to account which will say "show." Click on "show" and you'll get the acess key the controller-info.xml file is expecting, and your account name too, i.e. customer1.
... View more