Fix sample bundle - "apikey"

1. The Validate ConsumerKey flow should use the "VerifyAPIKey" policy instead of "GetOAuthV1Info" policy. 
2. This Change requires change in the flow variables referred in the RateLimit policy - "CheckQuota". Fixed that also.
3. Removed the "ClassifyRequest" policy, which is setting the "flow.resource.name" with the "proxy.pathsuffix". When the ApiProduct is configured either with the Proxies or Environments or both, the flow.resource.name will be automatically set to "proxy.pathsuffix"