Broke out key mgmt run-on into more logical parts

Changed ',' to 'and' grouping customer parts together
Changed 'and' to 'or' to help not include in list
Added comma and changed wording around provider liability

Change-Id: I792d9e4980c00d90eefb822a1150fdb06e4bf244
Closes-Bug: #1342279
Merge "Broke out key mgmt run-on into more logical parts"