THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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1) when no auth is configured on bookie-side the default "AuthDisabledPlugin" plugin comes to play (on 4.4.0 we call it "NULLPlugin" )
2) when no auth is configured on bookies the bookie goes to a permissive mode in which any client is allowed to connect and use bookie functions, any 'auth' message will be answered with an OK status code from the AuthDisabledPlugin
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