Wei Zhou e333f2705a
user-shared networks: fix few issues (#6887)
This PR fixes few issues:

    - check ip range of new network instead of network cidr, so that the two networks can use same cidr but no IP conflicts.
    - Private gateways: return vlan number only for root admins
    - when update isolated network, check new guest vm cidr and IPs of neworks/vpc gateways associated to it
2023-10-09 13:11:44 +05:30
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