Minor logic updates to ConnectionParameters
Minor logic updates to ConnectionParameters

- Always validate credentials
- Make ssl_options a dict if nothing is passed

hugoxia/pika,fkarb/pika-python3,jstnlef/pika,renshawbay/pika-python3,zixiliuyue/pika,Zephor5/pika,knowsis/pika,shinji-s/pika,Tarsbot/pika,benjamin9999/pika,vitaly-krugl/pika,reddec/pika,skftn/pika,pika/pika,vrtsystems/pika