unfreeze dracut, adapt for NM via systemd in initrd

Upstream dracut updated NM to run as a systemd service
(with full dbus support) in the initrd in [1]. Adapt our
systemd units to handle this case.

This should still work fine for RHCOS because we still have
`Before=dracut-initqueue.service`, which can be dropped when
everyone is on dracut 0.54+.

Fixes: coreos/fedora-coreos-tracker#842

manifest-lock.overrides.yaml

@@ -7,14 +7,4 @@
 # *should* include a URL in the `metadata.reason` key, though it's acceptable to
 # omit one for FCOS-specific packages (e.g. ignition, afterburn, etc...).
 
-packages:
-  dracut:
-    evr: 053-5.fc34
-    metadata:
-      reason: https://github.com/coreos/fedora-coreos-tracker/issues/842
-      type: pin
-  dracut-network:
-    evr: 053-5.fc34
-    metadata:
-      reason: https://github.com/coreos/fedora-coreos-tracker/issues/842
-      type: pin
+packages: {}

manifest-lock.x86_64.json

@@ -229,10 +229,10 @@
       "evra": "4.2-1.fc34.x86_64"
     },
     "dracut": {
-      "evra": "053-5.fc34.x86_64"
+      "evra": "055-2.fc34.x86_64"
     },
     "dracut-network": {
-      "evra": "053-5.fc34.x86_64"
+      "evra": "055-2.fc34.x86_64"
     },
     "e2fsprogs": {
       "evra": "1.45.6-5.fc34.x86_64"

overlay.d/05core/usr/lib/dracut/modules.d/35coreos-network/coreos-copy-firstboot-network.service

@@ -8,20 +8,20 @@
 #     - i.e. after /dev/disk/by-label/boot is available
 #     - and after the ignition-dracut GPT generator (see below)
 # - Need to run before networking is brought up.
-#     - This is done in nm-run.service [1]
-#     - i.e. Before=nm-run.service
+#     - This is done in nm-initrd.service [1]
+#     - i.e. Before=nm-initrd.service
 # - Need to make sure karg networking configuration isn't applied
 #     - There are two ways to do this.
 #         - One is to run *before* the nm-config.sh [2] that runs as part of
 #           dracut-cmdline [3] and `ln -sf /bin/true /usr/libexec/nm-initrd-generator`.
 #             - i.e. Before=dracut-cmdline.service
 #         - Another is to run *after* nm-config.sh [2] in dracut-cmdline [3]
 #           and just delete all the files created by nm-initrd-generator.
-#             - i.e. After=dracut-cmdline.service, but Before=nm-run.service
+#             - i.e. After=dracut-cmdline.service, but Before=nm-initrd.service
 #     - We'll go with the second option here because the need for the /boot
 #       device (mentioned above) means we can't start before dracut-cmdline.service
 #
-# [1] https://github.com/dracutdevs/dracut/blob/master/modules.d/35network-manager/nm-run.service
+# [1] https://github.com/dracutdevs/dracut/blob/master/modules.d/35network-manager/nm-initrd.service
 # [2] https://github.com/dracutdevs/dracut/blob/master/modules.d/35network-manager/nm-config.sh
 # [3] https://github.com/dracutdevs/dracut/blob/master/modules.d/35network-manager/module-setup.sh#L34
 #
@@ -30,8 +30,8 @@ Description=Copy CoreOS Firstboot Networking Config
 ConditionPathExists=/usr/lib/initrd-release
 DefaultDependencies=false
 Before=ignition-diskful.target
-Before=nm-run.service
-# compat: remove when everyone is on dracut 053+
+Before=nm-initrd.service
+# compat: remove when everyone is on dracut 054+
 Before=dracut-initqueue.service
 After=dracut-cmdline.service
 # Any services looking at mounts need to order after this

overlay.d/05core/usr/lib/dracut/modules.d/35coreos-network/coreos-enable-network.service

@@ -20,8 +20,8 @@ Before=ignition-fetch.service
 
 # See hack in coreos-enable-network, as well as coreos-copy-firstboot-network.service.
 After=dracut-cmdline.service
-Before=nm-run.service
-# compat: remove when everyone is on dracut 053+
+Before=nm-initrd.service
+# compat: remove when everyone is on dracut 054+
 Before=dracut-initqueue.service
 
 [Service]