[config/show]: split vlan into separate file

[lguohan]

• add vlan.py in config and show
• add extensive unit tests for vlan

Signed-off-by: Guohan Lu [email protected]

- What I did

• add vlan.py in config and show
• add extensive unit tests for vlan

- How I did it

- How to verify it
unit test

---------- coverage: platform linux2, python 2.7.16-final-0 ----------
Name                              Stmts   Miss  Cover
-----------------------------------------------------
config/__init__.py                    0      0   100%
config/aaa.py                       124     75    40%
config/config_mgmt.py               345    116    66%
config/feature.py                    25      5    80%
config/main.py                     2103   1540    27%
config/mlnx.py                      126     85    33%
config/nat.py                       680    570    16%
config/vlan.py                      131     14    89%
show/__init__.py                      0      0   100%
show/bgp_frr_v4.py                   36     36     0%
show/bgp_frr_v6.py                   33     33     0%
show/bgp_quagga_v4.py                20     20     0%
show/bgp_quagga_v6.py                15     15     0%
show/feature.py                      34      0   100%
show/main.py                       1737   1237    29%
show/mlnx.py                         80     62    23%
show/vlan.py                         93     18    81%
utilities_common/__init__.py          0      0   100%
utilities_common/cli.py             162     45    72%
utilities_common/db.py                5      0   100%
utilities_common/intf_filter.py      30     18    40%
utilities_common/netstat.py          35     15    57%
utilities_common/util_base.py        32     32     0%
-----------------------------------------------------
TOTAL                              5846   3936    33%

- Previous command output (if the output of a command-line utility has changed)

- New command output (if the output of a command-line utility has changed)

[lguohan]

will enable converge on this report soon.

[lgtm-com]

This pull request fixes 1 alert when merging 6c98714 into fec442e - view on LGTM.com

fixed alerts:

• 1 for Unused local variable

[lguohan]

@jleveque , find some missing scenarios not cover by unit test. add one unit test to cover it.

[lgtm-com]

This pull request fixes 1 alert when merging 0cbabd9 into 33ba594 - view on LGTM.com

fixed alerts:

• 1 for Unused local variable