What should be the value for these in the local.install.properties? Do I leave the value as is?
cert.cn specifies the name of the host
cert.keystore.name specifies the name of the cert keystore.
cert.keypass specifies the password for the cert kystore.
cert.store.name specifies the name of the cert store.
cert.storepass specifies the password for the cert store.
For a testing environment those would be sufficient values.
For a production environment you would want to set:
cert.cn to the name of the server you are running on (myproductionserver.com)
cert.keypass and cert.storepass to a strong password (I use a site such as http://www.pctools.com/guides/password/ to generate a completely random string for free. You will need to remember this password if you need to change/add certs)