ncm-network: networkmanager module to configure using keyfile format

starting a new module to manage networking using networkmanager keyfile format. using most of the existing logic.
- slight tweak to file_dump and process_network to make it work with NM config.
- single interface, and bonding is currenlty supported.
- new nm_manage_dns option is added to schema to decided if NM should manage dns.
NM by default manages dns which will intefere with ncm-resolver.
- ethtool,vlan,bridge configuration not yet supported.

ncm-network/src/main/pan/components/network/config-networkmanager.pan

@@ -0,0 +1,10 @@
+# ${license-info}
+# ${developer-info}
+# ${author-info}
+
+unique template components/network/config-networkmanager;
+
+include 'components/network/config';
+
+prefix "/software/components/network";
+"ncm-module" = "networkmanager";

ncm-network/src/main/pan/components/network/core-schema.pan

@@ -418,6 +418,7 @@ type structure_network = {
     "set_hwaddr" ? boolean
     "nmcontrolled" ? boolean
     "allow_nm" ? boolean
+    "nm_manage_dns" ? boolean
     "primary_ip" ? string
     "routers" ? structure_router{}
     "ipv6" ? structure_ipv6

ncm-network/src/main/perl/network.pm

@@ -325,7 +325,14 @@ sub file_dump
     # Make hardlinked copy
     #   hardlink is ok, new file will be put in place, no editing of existing file
     if (!$self->file_exists($file) || $self->mk_bu($file, $testcfg)) {
-        my $fh = CAF::FileWriter->new($testcfg, log => $self, keeps_state => 1);
+        my $fh;
+        # files in nmconnection has to be mode 0400 otherwise networkmanager won't read it.
+        if ($file =~ /\.nmconnection$/) {
+            $fh = CAF::FileWriter->new($testcfg, log => $self, mode => 0400, keeps_state => 1);
+        } else {
+            $fh = CAF::FileWriter->new($testcfg, log => $self, keeps_state => 1);
+        };
+
         print $fh join("\n", @$text, ''); # add trailing newline
 
         # Use 'scheduled' in messages to indicate that this method
@@ -839,6 +846,14 @@ sub process_network
             }
             $iface->{my_inner_ipaddr} .= "/$iface->{my_inner_prefix}";
         }
+
+        # Newly added used when generating the keyfile format config in networkmanager module
+        my $media =  $nic->{media};
+        if ($media) {
+            $iface->{media} = $media;
+            $self->debug(1, "Added media option $media for interface $ifname");
+        }
+
     }
 
     return $nwtree;