BUG-625: migrate InventoryAndReadAdapter

This patch migrates InventoryAndReadAdapte from xtend to Java, finishing
the conversion.

Change-Id: I9e810283ec96c8906b0aa029691ab49dc793ffe8
Signed-off-by: Robert Varga <rovarga@cisco.com>
BUG-1089: migrate TopologyMapping

Simple transformation from xtend to Java, along with some optimizations.

Change-Id: I62b022671ed5b8746ca7ba8130d0b0bf018c9fde
Signed-off-by: Robert Varga <rovarga@cisco.com>
BUG-1089: convert TopologyReader

This converts TopologyReader from xtend to pure Java, optimizing it
while we're at it.

Change-Id: Ide991f0bc529db0cdeb3526d4b0d4e99d8ade3c7
Signed-off-by: Robert Varga <rovarga@cisco.com>
Merge "BUG-625: migrate InventoryAndReadAdapter"
Merge "BUG-1089: migrate TopologyMapping"
Merge "BUG-1089: convert TopologyReader"