[test] One case in JawsESLCertCheckTest failed due to the cert used to sign jnlp is not correct

Due to fix of JDK-8161384, the cert used to sign jnlp has been changed to a internal cert. We need to find a public CA cert.
 
Affected tests:
RULE JawsESLCertCheckTest::testESLCertumRevokedSignedMFAllPermsVHigh any any