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.

Conflicts:
	rootconf/default/home/cumulus/sysroot-complete

docs/examples/interfaces

@@ -11,6 +11,19 @@ iface eth0 inet dhcp
 
 #source /etc/network/interfaces.d/template.bridges
 
+# swp interface
+auto swp30
+iface swp30
+    address 12.0.0.4/24
+    address 12.0.0.6/24
+    address 2000:1000:1000:1000:3::5/128
+    mtu 1600
+    alias "test network"
+    duplex full
+    autoneg on
+    speed 1000
+
+# bond interface
 auto bond3
 iface bond3 inet static
     address 100.0.0.4/16
@@ -22,6 +35,7 @@ iface bond3 inet static
     bond-min-links 1
     bond-xmit_hash_policy layer3+4
 
+# bond interface
 auto bond4
 iface bond4 inet static
     address 100.0.0.6/16
@@ -33,14 +47,16 @@ iface bond4 inet static
     bond-min-links 1
     bond-xmit_hash_policy layer3+4
 
+# bond interface
 auto br0
 iface br0
     address 12.0.0.4/24
     address 12.0.0.6/24
-    address6 2000:1000:1000:1000:3::5/128
-    mstpctl_ports bond3 bond4 swp5 swp8
-    mstpctl_stp on
+    address 2000:1000:1000:1000:3::5/128
+    bridge-ports bond3 bond4 swp5 swp8
+    bridge-stp on
 
+# vlan interface on bond
 auto bond3.2000
 iface bond3.2000 inet static
     address 100.1.0.4/16
@@ -51,7 +67,8 @@ iface bond4.2000 inet static
 
 auto br2000
 iface br2000 inet6 static
-    address6 2001:dad:beef::4/64
-    mstpctl_ports bond3.2000 bond4.2000 swp5.2000
-    mstpctl_treeprio 61440
-    mstpctl_stp on
+    address 2001:dad:beef::4/64
+    bridge-ports bond3.2000 bond4.2000 swp5.2000
+    bridge-stp on
+    mstpctl-treeprio 61440
+    mstpctl-portp2p bond3.2000=yes bond4.2000=yes