Fixing minor issues with testing code

Configuration variable might not in fact yet exist and it
was throwing warnings.

I found that the account name was slightly more global than
just in globalcollect. (aka. needed in adyen)

Change-Id: I41da5252ad419e2162bd15799fe2665a329bb09b
Changes for SmashPig/Adyen!

When a payment returns from Adyen it should be in the pending
state because we always will need to do further things to it.

And... we need to add metadata to stomp messages such that
smashpig doesn't freak out when it attempts to deserialize.

Change-Id: Ia733b4fb1cabab2ab34e084e96c212d1675538ae