Fix bash completion for sudo users (mostly cosmetic) + man page and

example fixes

Ticket: CM-2911
Reviewed By: CCR-1637
Testing Done: tested ifupdown2 sanity and bash completion

The python argcomplete module that i use for ifupdown2 has a limitation
that it does not work with sudo when used in the global mode. But there is
a workaround for it online (long story short...instead of enabling the global
argparse complete ...the author recommends registering argparse complete bash
completion individually for your script). This patch does just that.

This patch also moves the udev overrides to their respective packages.
Two of them are owned by ifupdown2.

man.rst/ifquery.8.rst

@@ -6,16 +6,12 @@ ifquery
 query network interface configuration
 -------------------------------------
 
-:Author: roopa@cumulusnetworks.com
+:Author: Roopa Prabhu <roopa@cumulusnetworks.com>
 :Date:   2014-02-05
 :Copyright: Copyright 2014 Cumulus Networks, Inc.  All rights reserved.
 :Version: 0.1
 :Manual section: 8
 
-NAME
-====
-    **ifquery** - query interface configuration
-
 SYNOPSIS
 ========
 
@@ -36,7 +32,8 @@ DESCRIPTION
     in **/etc/network/interfaces** file.
 
     **ifquery** always works on the current **interfaces(5)** file
-    **/etc/network/interfaces**.
+    **/etc/network/interfaces** unless an alternate interfaces file is
+    provided with the **-i** option.
 
 OPTIONS
 =======
@@ -65,13 +62,24 @@ OPTIONS
                           Exclude interfaces from the list of interfaces to
                           operate on. Can be specified multiple times
 
+    -i INTERFACESFILE, --interfaces INTERFACESFILE
+                          Use interfaces file instead of default
+                          /etc/network/interfaces
+
     -r, --running         print raw interfaces file entries
 
     -c, --check           check interface file contents against running state
                           of an interface. Returns exit code 0 on success and
                           1 on error
 
-    -p, --print-dependency {list,dot} print iface dependency in list or dot format
+    -x, --raw             print raw config file entries
+
+
+    -o {native,json}, --format {native,json}
+                          interface display format
+
+    -p, --print-dependency {list,dot}
+                          print iface dependency in list or dot format
 
     -s, --syntax-help     print supported interface config syntax. Scans all
                           addon modules and dumps supported syntax from them