Add support for the nofail filesystem option on Linux https://github.com/webmin/webmin/issues/1012

mount/help/linux_nofail.html

@@ -0,0 +1,8 @@
+<header>Continue boot even if mount fails?</header>
+
+By default, any filesystem that fails to mount at boot time will interrupt
+the boot process. Changing this option to <b>Yes</b> will allow bootup to
+continue, as long as it's no the root filesystem. <p>
+
+<footer>
+

mount/lang/en

@@ -368,6 +368,7 @@ linux_noenforce=Yes, but don't enforce
 linux_df=Include reserved blocks in filesystem size?
 linux_noatime=Avoid updating last access times?
 linux_netdev=Wait until network interfaces are up?
+linux_nofail=Continue boot even if mount fails?
 linux_ecname=Missing or invalid client netbios name
 linux_emname=Missing or invalid server hostname or IP address
 linux_bind=Original Directory

mount/linux-lib.pl

@@ -1205,6 +1205,9 @@ if ($type ne "swap" && $type ne "auto" &&
 
 	print &ui_table_row(&hlink($text{'linux_netdev'}, "linux_netdev"),
 		&ui_yesno_radio("lnx_netdev", defined($options{"_netdev"})));
+
+	print &ui_table_row(&hlink($text{'linux_nofail'}, "linux_nofail"),
+		&ui_yesno_radio("lnx_nofail", defined($options{"nofail"})));
 	}
 	
 if ($type =~ /^ext\d+$/) {
@@ -1810,6 +1813,9 @@ if ($_[0] ne "swap" && $_[0] ne "auto" &&
 
 	delete($options{"_netdev"});
 	$options{"_netdev"} = "" if ($in{'lnx_netdev'});
+
+	delete($options{"nofail"});
+	$options{"nofail"} = "" if ($in{'lnx_nofail'});
 	}
 
 if (($_[0] eq "nfs") || ($_[0] eq "nfs4")) {