CLOUDSTACK-3719: wrong declaration of random_gen call
CLOUDSTACK-3719: wrong declaration of random_gen call

since random_gen can take an id to prepend a testcase identifier to the
created cloud resource, we need to explicitly specify the size param. In
vmsnapshot test create the random_data string of size (100)

Signed-off-by: Prasanna Santhanam <82219615980488abd2acc1a3d71cfb58f0b2b8b6@apache.org>
(cherry picked from commit 5bb3a56acac440b022ed6c45f97d0d85dcc94b96)

resmo/cloudstack,GabrielBrascher/cloudstack,DaanHoogland/cloudstack,jcshen007/cloudstack,GabrielBrascher/cloudstack,DaanHoogland/cloudstack,wido/cloudstack,jcshen007/cloudstack,resmo/cloudstack,GabrielBrascher/cloudstack,DaanHoogland/cloudstack,DaanHoogland/cloudstack,wido/cloudstack,wido/cloudstack,wido/cloudstack,wido/cloudstack,DaanHoogland/cloudstack,GabrielBrascher/cloudstack,resmo/cloudstack,resmo/cloudstack,resmo/cloudstack,jcshen007/cloudstack,resmo/cloudstack,resmo/cloudstack,GabrielBrascher/cloudstack,jcshen007/cloudstack,wido/cloudstack,wido/cloudstack,GabrielBrascher/cloudstack,DaanHoogland/cloudstack,GabrielBrascher/cloudstack,DaanHoogland/cloudstack,jcshen007/cloudstack,jcshen007/cloudstack,jcshen007/cloudstack