Updates the dhcp-all-interfaces element so that
we add new DHCP interfaces using a udev rule
instead of a systemd service.
The previous approach (using the systemd service)
was proving to be problematic when used with
the new Fedora constistent network naming
convention rules (em1, em2, etc.). We aren't using
these device names as a default yet... but we will
need to soon and when we do udev rules seem to be the
best way to avoid racy behaviour when calling
dhcp-all-interfaces.sh from the systemd service.
Change-Id: I87e0aed1f34718e896bd414388886a1f1073b0c0
Rename generate-interfaces-file.sh to dhcp-all-interfaces.sh
so that it is easier to find/remember in the $PATH on a deployed
image.
Also, on some distros the script actually generates many files
so the previous name was a bit confusing.
Change-Id: I7152fa7c28e8ade251311da2cd5f75972423b66c
Includes:
* Enhancements to the generate-interfaces-file.sh script
so that it generates ifcfg network-scripts for
distros like Fedora/RHEL.
* Includes a new dhcp-all-interfaces.service systemd
script which ensures network interfaces get generated
before the network service starts on Fedora.
* Add a new disable_interface function to
generate-interfaces-file.sh which (on Fedora)
will delete the ifcfg config for an interface which
isn't plugged in.
This is important because ifcfg-eth0 exists by default
and we want to remove it if the NIC isn't connected.
Previous behaviour on Ubuntu is unchanged and the
generate-interfaces-file.sh just logs it as skipped.
* General doc updates...
I tested this on a multi-nic machine w/ Fedora where the first NIC
exists but was not connected.
Change-Id: Ia99e312539da43caefd72aa60398d43dac5dcc8f
Closes-Bug: 1239880
