Added more test cases for vlan provider methods in integration testing.
Renamed integration provider spec file.
Rename the file.
Changed the powerconnect_vlan_spec.rb to wrap properties in a function.
Changes in interface spec
Adding untagged vlan support in general mode
Merge branch 'master' of https://github.com/dell-asm/dell-dell_powerconnect
Merge pull request #5 from nvinodkumar/master

Changes in interface spec
Merge pull request #4 from sandeepkrpandey/master

Renamed and changed powerconnect_vlan_spec.rb file