Added missing test classes to net.i2p.data.i2cp

...va/test/net/i2p/data/i2cp/BandwidthLimitsMessageTest.java

core/java/test/net/i2p/data/i2cp/DestLookupMessageTest.java

core/java/test/net/i2p/data/i2cp/DestReplyMessageTest.java

...test/net/i2p/data/i2cp/GetBandwidthLimitsMessageTest.java

core/java/test/net/i2p/data/i2cp/GetDateMessageTest.java

core/java/test/net/i2p/data/i2cp/I2CPTestSuite.java

...test/net/i2p/data/i2cp/ReconfigureSessionMessageTest.java

...test/net/i2p/data/i2cp/SendMessageExpiresMessageTest.java

core/java/test/net/i2p/data/i2cp/SetDateMessageTest.java