Fix SLES 16 install when no serial console

autoinstall is run without a tty, so detect that and use tty1 instead.

Also, clean up agama config by avoiding too many duplicated network entries.

confluent_osdeploy/suse16/initramfs/var/lib/dracut/hooks/pre-trigger/01-confluent.sh

@@ -62,6 +62,7 @@ if [ -e /dev/disk/by-label/CNFLNT_IDNT ]; then
                 /usr/libexec/nm-initrd-generator ip=$NICGUESS:dhcp
                 echo ip=$NICGUESS:dhcp >> /etc/cmdline.d/01-confluent.conf
                 echo " "ip=$NICGUESS:dhcp >> /run/agama/cmdline.d/agama.conf
+		DETECTED=1
             else
                 v4addr=$(grep ^ipv4_address: $tcfg)
                 v4addr=${v4addr#ipv4_address: }

confluent_osdeploy/suse16/profiles/server/autoinstall.sh

@@ -8,6 +8,11 @@ if [ -e /run/confluent/01-autocons.conf ]; then
         serialcons=$(tty)
     fi
 fi
+if [ "$serialcons" = "not a tty" ]; then
+    serialcons="/dev/tty1"
+elif [ -z "$serialcons" ]; then
+    serialcons="/dev/tty1"
+fi
 profile=$(grep ^profile: /etc/confluent/confluent.deploycfg|awk '{print $2}')
 export profile
 python3 /opt/confluent/bin/apiclient /confluent-public/os/$profile/scripts/functions > /etc/confluent/functions