Previously dhcp-all-interfaces was only blocking the first network
interface to come up. We add an instance stanza to make it run one
instance of generate-interfaces-file per interface. We then use flock to
serialize runs of generate-interfaces-file.
Fixes bug #1233577
Change-Id: Ib16bed6b37ce0789e315ef57e05ac561470a6f2a
Cloud-init needs to query the metadata server after the network
interfaces are configured. The upstart job "cloud-init-nonet" is
specifically in place to provide a hook to block cloud-init from
running while we rearrange network interface configurations.
Fixes bug #1233577
Change-Id: Ib5cf75d858fdb670b2abcc082e912c4644d6b169
Ensures that all network interfaces are present in
/etc/network/interfaces. Any interface not already defined there
will be added and configured for DHCP.
Change-Id: I27e0902e62804e8d719acd7288109bd0e294fd16
