[ACS44] cherry pick CLOUDSTACK-6474

[Prachi Damle]

Hi Hugo/Daan,

Could you please cherry-pick following commit to 4.4 branch?

Commit hash:    be10b32b273bed1a1492f02b943b168195e762c0
CLOUDSTACK-6474: IAM - Not able to list shared networks that is created with 
scope="all"

Thanks,
Prachi