add openJDK/fips mode testing

[dirkmueller]

We're required to validate openjdk with enforcing fips mode (via mozilla-nss). the recommended testing procedure is this:

# Run the following for both openJDK 17 and 21
 
git clone -q https://github.com/ecki/JavaCryptoTest
cd ~/JavaCryptoTest/src/main/java/
javac net/eckenfels/test/jce/JCEProviderInfo.java
java -cp ~/JavaCryptoTest/src/main/java/ net.eckenfels.test.jce.JCEProviderInfo
# Check that it is "Listing all JCA Security Providers"
wget https://gitlab.suse.de/qe-security/testing/-/raw/main/data/openjdk/Tcheck.java
javac Tcheck.java
# poo125654: we only need to check that '1. SunPKCS11-NSS-FIPS using library null' is present and at the first place
java Tcheck
# Check that there's on first line string "SunPKCS11-NSS-FIPS using library null"