Revert "Rakefile: invoking anonymous user creation before starting monitoring threads", because it contained wrong binary file (OSX) for mongos. Problem of binaries will be solved in the future.

This reverts commit 35ba0f5e67c1d382c1a0f89b282d2935c6a79b8f.
Swaping anonymous user creation with monitoring methods in Rakefile, because it should be blocking