- add new negative test for bridged-virtual-interface setting
- modify variables in original bd tests to use bvi=False
- separate interface ipv4 test case into netmask and prefix
- replace per-testcase tag definitions with per-suite forced tags
- add separate tag for persistence suite, due to it's long execution time
Change-Id: I79ae699125d4838ed8b394dc80a028e08b4de684
Signed-off-by: selias <samelias@cisco.com>