Move interface wait time to netconfig task

For a workaround for bug 1458625, a 32 second sleep was added to the
url_available function that is run as part of the connectivity_tests
task that is run after netconfig. This wait should be part of the
netconfig task where the delay is needed when bringing up a new
bridge in ubuntu.  This will help ensure that the interfaces are ready
after the netconfig task if the url_available task is removed or
tasks are run in a different order.

Change-Id: Ie715d6bf1622d33dd10b15c5bea74e05f1bba858
Related-Bug: 1458625
Closes-Bug: 1458954

deployment/puppet/osnailyfacter/lib/puppet/parser/functions/url_available.rb

@@ -93,10 +93,6 @@ function. Must be of type String or Hash."
     end
   end
 
-  #Add sleep before checking for repos
-  #as Ubuntu waits 32 seconds for the
-  #bridge to become ready
-  sleep 32
   # if passed an array, iterate through the array an check each element
   if url.instance_of? Array
     url.each do |u|

deployment/puppet/osnailyfacter/modular/netconfig/netconfig.pp

@@ -68,3 +68,12 @@ if !defined(Service['irqbalance']) {
     require => Package['irqbalance'],
   }
 }
+
+# We need to wait at least 30 seconds for the bridges and other interfaces to
+# come up after being created.  This should allow for all interfaces to be up
+# and ready for traffic before proceeding with further deploy steps. LP#1458954
+exec { 'wait-for-interfaces':
+  path    => '/usr/bin:/bin',
+  command => 'sleep 32',
+  require => Class['l23network'],
+}