Fix the test : CouchbaseAuthenticatedViewTests\When_Bucket_Is_Authenticated_View_Returns_Results

Fix the following test in .Net library, it is constantly failing:

Test Class: CouchbaseAuthenticatedViewTests
Test Name: When_Bucket_Is_Authenticated_View_Returns_Results

Reason for failure:
There is no document/view getting created in SASL bucket with name "authenticated".
Instead the code creates the documents/views in "default" bucket since the code uses the default initialization of couchbase client which uses the "default" bucket.