Fix glance configuration for ceilometer

Modify /etc/glance/glance-api.conf, not /etc/ceilometer/ceilometer.conf.

Change-Id: I3725a6578fcad6c49b2fc1cd9495d391157e714b
Closes-Bug: #1269657
backport: havana
Update the glance notifier option for icehouse

The notifier_strategy option is deprecated, replaced by the
notification_driver option.

Change-Id: I1bd2c777dc7e502fc9774a75230b9e516631207f
Start the nova-network service instead of restarting it (minor edit)

The fourth (4) step of 'Configure networking' in the 'Configure Compute services'
chapter (RHEL, CentOS, Fedora), says: start the network service, but in the command
of the step it restarts the network service. This results to a warning that the
openstack-nova-network service was not able to stop.
This commit just changes the argument of the service command to start.

Change-Id: I348f63d89740f9935390e4861b68fe48f8fb24cf
backport: havana
slight change on ch064_certifications-compliance-statements

“Does” is singular, revised - "do" changed to does

Change-Id: If51652336e44bcd6e9ee5e9b1755c023ba0465cb
Merge "Fix glance configuration for ceilometer"
Merge "Update the glance notifier option for icehouse"
Merge "slight change on ch064_certifications-compliance-statements"
Merge "Start the nova-network service instead of restarting it (minor edit)"