That certificate for EEM is generated and that line filled in when you register your application against EEM. Check the register box, click the register button and enter your eiamadmin credentials.
You can follow this tech doc to get a detailed walk through of the install:
Installing CA Process Automation version 4.2
Document ID: TEC607491
http://www.ca.com/us/support/ca-support-online/product-content/knowledgebase-articles/tec607491.aspx
Which is written for 4.2, but the install is similar enough we have not updated that Knowledge document.