CLOUDSTACK-7935: keep colons in the request to ACS

ACS does not decode %3A to colon and thus some requests break
This closes #1

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>
cloudmonkey: for account param use listAccounts

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>