meson: Move network-config directory creation to main install file

The `ifcfg-rh` meson build file installs a new post install script
to create the `network-config` directory.

This has been moved to the main post install file so it's easier to
find because all post install steps are together and it avoids and
extra post install script execution.

meson.build

@@ -895,6 +895,8 @@ meson.add_install_script(
   nm_pkgstatedir,
   enable_docs ? 'install_docs' : '',
   nm_mandir,
+  enable_ifcfg_rh ? 'create_network_scripts' : '',
+  nm_sysconfdir,
 )
 
 output = '\nSystem paths:\n'

src/settings/plugins/ifcfg-rh/meson.build

@@ -74,9 +74,6 @@ install_data(
   install_mode: 'rwxr-xr-x',
 )
 
-meson.add_install_script('sh', '-c',
-                         'mkdir -p $DESTDIR/@0@/sysconfig/network-scripts'.format(nm_sysconfdir))
-
 if enable_tests
   subdir('tests')
 endif

tools/meson-post-install.sh

@@ -49,3 +49,7 @@ if [ "$6" = install_docs ]; then
     ln -f "${DESTDIR}${mandir}/man5/NetworkManager.conf.5" "${DESTDIR}${mandir}/man5/nm-system-settings.conf.5"
 fi
 
+if [ "$8" = create_network_scripts ]; then
+    sysconfdir=$9
+    mkdir -p "${DESTDIR}${sysconfdir}/sysconfig/network-scripts"
+fi