[tests] Update Unit Test for addrman.h/addrman.cpp
[tests] Update Unit Test for addrman.h/addrman.cpp

Add test for adding multiple addresses to address manager
Clean up unnecessary modulo operations
Add test for GetNewBucket's alternate method signature

Conflicts:
	src/test/addrman_tests.cpp

chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin