Have networkmanager be content with diskless

Create an .nmconnection file
that sastisfies networkmanager
about the interface that confluent brought up.

confluent_osdeploy/diskless/build/dracut/install

@@ -5,7 +5,7 @@ dracut_install curl openssl tar cpio gzip lsmod ethtool xz lsmod ethtool
 dracut_install modprobe touch echo cut wc bash netstat uniq grep ip hostname
 dracut_install awk egrep dirname expr sort
 dracut_install ssh sshd reboot parted mkfs mkfs.ext4 mkfs.xfs xfs_db mkswap
-dracut_install efibootmgr
+dracut_install efibootmgr uuidgen
 dracut_install du df ssh-keygen scp clear dhclient
 dracut_install /lib64/libnss_dns-2.28.so /lib64/libnss_dns.so.2
 dracut_install /usr/lib64/libnl-3.so.200

confluent_osdeploy/diskless/initramfs/usr/lib/dracut/hooks/cmdline/10-confluentdiskless.sh

@@ -106,7 +106,62 @@ else
     if [ ! -z "$v4gw" ]; then
         ip route add default via $v4gw
     fi
+    mkdir -p /run/NetworkManager/system-connections
+    cat > /run/NetworkManager/system-connections/$ifname.nmconnection << EOC
+[connection]
+id=eno1
+EOC
+    echo uuid=$(uuidgen) >> /run/NetworkManager/system-connections/$ifname.nmconnection
+    cat >> /run/NetworkManager/system-connections/$ifname.nmconnection << EOC
+type=ethernet
+autoconnect-retries=1
+EOC
+    echo interface-name=$ifname >> /run/NetworkManager/system-connections/$ifname.nmconnection
+    cat >> /run/NetworkManager/system-connections/$ifname.nmconnection << EOC
+multi-connect=1
+permissions=
+wait-device-timeout=60000
+
+[ethernet]
+mac-address-blacklist=
+
+[ipv4]
+EOC
+    echo address1=$v4addr/$v4nm >> /run/NetworkManager/system-connections/$ifname.nmconnection
+    if [ ! -z "$v4gw" ]; then
+        echo gateway=$v4gw >> /run/NetworkManager/system-connections/$ifname.nmconnection
+    fi
+    nameserversec=0
+    nameservers=""
+    while read -r entry; do
+        if [ $nameserversec = 1 ]; then
+            if [[ $entry == "-"* ]]; then
+                nameservers="$nameservers"${entry#- }";"
+                continue
+            fi
+        fi
+        nameserversec=0
+        if [ "${entry%:*}" = "nameservers" ]; then
+            nameserversec=1
+            continue
+        fi
+    done < /etc/confluent/confluent.deploycfg
+    echo dns=$nameservers >> /run/NetworkManager/system-connections/$ifname.nmconnection
+    dnsdomain=$(grep ^dnsdomain: /etc/confluent/confluent.deploycfg)
+    dnsdomain=${dnsdomain#dnsdomain: }
+    echo dns-search=$dnsdomain >> /run/NetworkManager/system-connections/$ifname.nmconnection
+    cat >> /run/NetworkManager/system-connections/$ifname.nmconnection << EOC
+may-fail=false
+method=manual
+
+[ipv6]
+addr-gen-mode=eui64
+method=auto
+
+[proxy]
+EOC
 fi
+chmod 600 /run/NetworkManager/system-connections/*.nmconnection
 echo -n "Initializing ssh..."
 ssh-keygen -A
 for pubkey in /etc/ssh/ssh_host*key.pub; do