Remove unneeded fs.file-max setting from sysctl tuning file

The kernel (since at least some 2.6 release) automatically sets a sane value
for fs.file-max based on the amount of memory installed in that system. That
value (around 100 file descriptors per 1MB of RAM) is usually much higher than
the value (65535) this template was trying to set.
Allow using the serial number for defining the bus order

This introduces a new optional attribute "serial_number" in the interface_maps
that can be use as additional matching criteria for defining the interface
order for a certain node. (This is helpful e.g. if two nodes with the same
Product Name need to have different interface_map defined)
Handle empty network definitions in recipe

This just makes the code more solid.
virtual ip allocation
debug line should mention the right function, not allocate_ip (this is valid for all debug lines here, I guess)
rename name to service
rewriting code for remove duplicate
few typos
add deallocate for virtual ip
fix for binary
wrong intend
Merge pull request #191 from rhafer/fix/10gbe-tuning

Remove unneeded fs.file-max setting from sysctl tuning file
Merge pull request #193 from vuntz/avoid-crash

Handle empty network definitions in recipe
Merge pull request #192 from rhafer/pull-req-release-pebbles-master-ead8713cdc2ce28d97bab36901b28238e32bb08e

Allow using the serial number of a node as an additional matching criteria for the bus_order [3/3]
Merge pull request #1 from crowbar/release/pebbles/master

Release/pebbles/master
Merge branch 'feature/DCB-130/pebbles/master' into feature/DCB-130/pebbles/merge
a log of typos
Create network-related data bags from proposal, not from template

We were creating the crowbar/admin_network and friends data bags in
create_proposal, which means that the network definitions came from the
template. Which is simply wrong since we want the network definitions
from the proposal.

Instead, create the data bags from apply_role_pre_chef_call (only if the
data bags don't exist yet, to avoid issues when re-applying the
proposal).
Merge pull request #196 from MirantisDellCrowbar/feature/DCB-130/pebbles/merge

virtual ip allocation
Merge pull request #198 from vuntz/create-data-bag-from-proposal

Create network-related data bags from proposal, not from template