Handle the case of pipe char in value for iniset

iniset did not handle the case of "|" in the value
to be injected. Fix this by replacing | with \000 (NULL).

Fixes bug #1258050

Change-Id: I8882c2f3f177ebdfa0c66270dbbc7fd50f30b065
Merge "Handle the case of pipe char in value for iniset"
Merge branch 'master' of github.com:openstack-dev/devstack