network: update NM autoconnections configuration for centos

The policy should be the same for RHEL and CentOS Stream.
Apply also to rhel-like systems.

We can use systemd mechanism using triggering conditions either for
kernel option parsing or for system detection. It seems that systemd
would be better serving here for the kernel option conditions, os
detection seems to be more feasible on our side inside the service
execution script.

Resolves: RHEL-67815

Author: rvykydal

data/systemd/anaconda-nm-disable-autocons-rhel.service

@@ -2,10 +2,9 @@
 ConditionKernelCommandLine=|ip
 ConditionKernelCommandLine=|inst.ks
 ConditionKernelCommandLine=|BOOTIF
-ConditionOSRelease=ID=rhel
 Description=NetworkManager autoconnections configuration for Anaconda installation environment for RHEL
 Before=NetworkManager.service
 
 [Service]
 Type=oneshot
-ExecStart=/usr/bin/anaconda-nm-disable-autocons
+ExecStart=/usr/bin/anaconda-nm-disable-autocons rhel

scripts/anaconda-nm-disable-autocons

@@ -1,4 +1,15 @@
-#!/bin/sh
+#!/bin/bash
+
+# Disable only on system with rhel policy (RHEL, CentOS, Alma Linux, Rocky Linux, ...)
+if [ "$1" == "rhel" ]; then
+    source /etc/os-release
+    if [[ ! "${ID}" == "rhel" ]] && [[ ! "${ID}" == "centos" ]] && [[ ! "${ID_LIKE}" =~ "rhel" ]]; then
+        echo "Skipping the RHEL NM autoconnections policy setting on system with ID: ${ID}, ID_LIKE: ${ID_LIKE}."
+        exit 0
+    fi
+fi
+
+echo "Disabling NetworkManager autoconnections."
 cat > /etc/NetworkManager/conf.d/90-anaconda-no-auto-default.conf << EOF
 [main]
 no-auto-default=*