Allow indent text to be passed in
Allow indent text to be passed in

Instead of forcing single space indenting allow
the indenting string to be passed in so that others
can provided their favorite indent (tabs, two spaces
or other...)

Change-Id: I2dfb3baeaecb8bed197429b591daed69eb8cc834

jimbobhickville/taskflow,pombredanne/taskflow-1,openstack/taskflow,pombredanne/taskflow-1,junneyang/taskflow,openstack/taskflow,junneyang/taskflow,jimbobhickville/taskflow