Fix a bug where ascii and unicode strings are handled incorrectly.

Signed-off-by: Min Chen <minchnew@gmail.com>
unicode fixing mergered inro master

Signed-off-by: Min Chen <minchnew@gmail.com>
REST APIs for NetFlow tab is done.

Signed-off-by: Min Chen <minchnew@gmail.com>
Merge branch 'master' into switch