Fix BITAuthenticator state after cleanup

[MatkovIvan]

Issue

Dialog with following error is shown in infinite loop (appears again and again after close):
[HockeySDK] -[BITAuthenticator validate]_block_invoke/243 Validation failed with error: Error Domain=BITAuthenticatorErrorDomain Code=6 "Make sure to identify the installation first" UserInfo={NSLocalizedDescription=Make sure to identify the installation first}

Reproduction

Code:

- (void)authenticateDevice {
  BITAuthenticator *authenticator = BITHockeyManager.sharedHockeyManager.authenticator;
  [authenticator cleanupInternalStorage];
  authenticator.identificationType = BITAuthenticatorIdentificationTypeDevice;
  authenticator.restrictApplicationUsage = YES;
  [authenticator authenticateInstallation];
}

Steps:

1. Be already autentificated with same identificationType
2. Call cleanupInternalStorage
3. Call authenticateInstallation