changes done: adding the rspec for configuration
Merge pull request #1 from knvsharishkumar/master

changes done: adding the rspec for configuration
changes done: incorporating the review comments on rspec
1. Removed hardcoded URL for tftp connection. Externalized it to YML file
2. Added missing validation of tests.
changes done: incorporating the review comments for rspec, externalize the validating properties for clarity
Merge pull request #2 from knvsharishkumar/master

incorporating rspec review comments
Merge branch 'master' of https://github.com/dell-asm/dell-dell_powerconnect