홍길동 / onos

* Add ONOS-specific directories to the executable PATH in the envDefaults file
* Fix a typo inside "onos-show-cell": don't show OC0, because it is not used

 * Each cell-specific variable is explicitly listed
   in the cell config file:
   ONOS_CELL, ONOS_NIC, OC1-OC9, OCN, OCI, ONOS_FEATURES

 * Cleanup and bug fixes inside bash_profile:
   - Don't export explicitly OCI and ONOS_CELL, because those
     are now exported in the cell config file
   - unset ONOS_CELL, ONOS_NIC, ONOS_FEATURES (the last two weren't
     unset before)
   - The built-in "cell" function shows OC1 to OC9 instead of OC0-OC9;
     OC0 is never used/setup anywhere else

 * Added two new shell commands:
   - tools/test/bin/onos-lsit-cells : lists existing ONOS cell configurations
     It is the equivalent of the "cells" built-in bash command
   - tools/test/bin/onos-show-cell : shows the configuration of an ONOS cell
     It is the equivalent of the "cell" built-in bash command, but
     it can show also the configuration of any ONOS cell (not only
     the default one).

construct Interface objects based on PortAddresses from HostService.

No functional changes.

 * Description header formatting
 * Added missing new line at the end of a file
 * Removed extra new lines at the end of a file

Change-Id: Idbbce6a72b6f7fecc6691f2af68f4ce40b58ca34

Change-Id: I7489cef4cb40c2201a5be3435b63fc5ccd87e033

Change-Id: If1c86ab88987fb4ef0db8beaa412c4dc030f5520

Change-Id: I3f3a36f2249c1ba36175ad81fa374f7d8ab89af1

- prep work for removing onos-core-hz-net bundle

Change-Id: I8c8826ce7357e046b74f67fb0b1449dee32d63eb

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Change-Id: I91da0a5d65128e5ba5179b0eab41839eec706c71

Change-Id: I6f01acffc1f05aab106c7132d91be2c4e6faa399

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Change-Id: I8e8660e979a2d250496a5ae3100e66e48a67290a

…g it. This will be used by the initial implementation of distributed host store

Change-Id: I43353b97483353be83b49214970a5fceedaea980

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Change-Id: I3f3658bef36ca9e90f796050abfb641e4cf8540d

Change-Id: Iade7f2b9aeebf73cb65830ecf3120f64da5ca7df