The ARPUPDATE option has been introduced. It defaults to 'yes'.

  By setting the ARPUPDATE to 'no', administrator can disable
  updating neighbouring computers with ARP information about current
  NIC. This is especially needed when using LVS Load Balancing with
  Direct routing enabled.

  Resolves: RHBZ#1440888

  Previously, some administrators were unable to force initscripts to
  not obtatin hostname from DHCP, even though they were using static
  configuration of network. Right now, setting 'NO_DHCP_HOSTNAME' to
  'yes', 'true' or '1' in /etc/sysconfig/network will allow them to do so.

  Resolves: RHBZ #1157856

  Resolves: RHBZ #1350602

Resolves: #1210732

The current grep check (fgrep -sqx) in install_bonding_driver, to determine
whether bond master exists, fails when there are multiple bond masters.
The fix assumes that multiple bond masters are on different lines in the file
"/sys/class/net/bonding_masters", while they are in fact on the same line.
Since fgrep -sqx checks for the entire line,it will never match any one bond
master within the line and always fail if there are multiple bonds.

This patch improves the check by creating a new function, bond_master_exists()
to handle this and other conditions.

Orabug: 19897586

Signed-off-by: Ashish Samant <ashish.samant@oracle.com>
Signed-off-by: John Haxby <john.haxby@oracle.com>
Acked-by: Mukesh Kacker <mukesh.kacker@oracle.com>

Conflicts:
	sysconfig/network-scripts/network-functions