Fix typo NEUTON to NEUTRON

Fixes bug: #1269111

Change-Id: Icf66b4d474698b5f3ca22bc656ecd12d03164bce
updated sar options to collect more data

in order to have better data on the load state of the test nodes
we should track things beyond just cpu time. Add in load time,
process creation rates, and io rates during the tests.

also add a sar filter that makes it report on one line

reading sar input with multiple flags is somewhat problematic,
because it's tons of interspersed headers. So build something with
does a pivot filter to make it possible to get this all on one
line.

Change-Id: I8f085cedda65dfc37ad530eb97ba1fc5577314c3
Fix stop_neutron metadata agent function

Currently, stop_neutron fails in Jenkins because it kills itself.
This patch ensure we kill only neutron metadata agent, and not the awk
process in itself.

Change-Id: I25d1d90e002fa9eb3c5bc366cc74cb70a2daa69f
Closes-bug: #1269982
Signed-off-by: Emilien Macchi <emilien.macchi@enovance.com>
Merge "Fix typo NEUTON to NEUTRON"
Merge "Fix stop_neutron metadata agent function"
Merge "updated sar options to collect more data"
Merge branch 'master' of git://github.com/openstack-dev/devstack into opendaylight