CloudSigma2 API cleanup

Cleaned up the CloudSigma2 API:

* Removed the ComputeService view from the ApiMetadata (there is still no ComputeService implementation).
* Enabled the tag live tests, as they are now passing again.
* Fixed the editProfileInfo live test.

@Kentzo, @shevchenator: I've executed all live tests and all of them are passing again except the *testListSubscriptionsCalculator* one. It was working a few days ago, but has started failing now. Are there any changes in the server side that can have caused this? (Anyway, fixing that live test should be done in a different PR, as it is unrelated to this one).

    Caused by: org.jclouds.http.HttpResponseException: command: GET https://lvs.cloudsigma.com/api/2.0/subscriptioncalculator/ HTTP/1.1 failed with response: HTTP/1.1 405 METHOD NOT ALLOWED; content: []
	at org.jclouds.cloudsigma2.handlers.CloudSigmaErrorHandler.handleError(CloudSigmaErrorHandler.java:51)
	... 31 more
    Caused by: org.jclouds.http.HttpResponseException: command: GET https://lvs.cloudsigma.com/api/2.0/subscriptioncalculator/ HTTP/1.1 failed with response: HTTP/1.1 405 METHOD NOT ALLOWED; content: []
	at org.jclouds.cloudsigma2.handlers.CloudSigmaErrorHandler.handleError(CloudSigmaErrorHandler.java:51)
	... 31 more