tree 524dd99bf3f9ed6868ce3af4b2a0fe2d8d748dae
parent da0e579bca5e1ee5c25ad74b171900e3f682c56c
author Toshio Koide <t-koide@onlab.us> 1408591197 -0700
committer Saurav Das <sauravdas@alumni.stanford.edu> 1409942841 -0700

Add getPortNumbersOf(dpid) method to Tree class.

- Added functionality to retrieve existing ports on the specified dpid in the tree.
- Optimized to decrease the inner variables.
- This task is a preparation for ONOS-1694, ONOS-1841 and ONOS-1690.

Change-Id: I0a4fe8c1b3b0873d13d36988fec2bf3862b7856b