Upgraded dependecny on urfave/cli module to unfrave/cli/v2 plus Refactored kr Commands to use aliases

[tryfinally]

Modified command line option for digitalocean/digital-ocean to use aliased command

1. Remove duplicate hiiden command adn added an alias
2. Added dummy action to command "aws,bitbucket,digitalocean,gcp,github,ghe,gitlab,heroku"

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