All tests must use BaseFixture or a fixture derived from it to get this feature.
This commit also fixes a few warnings in tests/mgmt, and moves test cases into nfd::tests namespace.
refs #1290
Change-Id: I891441a5abce170e35648d463f7157b18429f79f
Log level can be controlled using NFD_LOG environment variable. The
following options are available
Set up log level using mnemonic
NFD_LOG=none|error|warn|info|debug|trace
Set up log level using log-level number (0 none, >=5 all)
NFD_LOG=0|1|2|3|4|5|6|...
Change-Id: Id38c2775f1137a4e38e4896963ab9a01fc863d2c
Refs: #1267
Junxiao Shi
Alexander Afanasyev
Ilya Moiseenko