HDDS-14955. Simplify BigInteger instantiation for improved efficiency.

[ptlrs]

What changes were proposed in this pull request?

This PR:

1. Enables BigIntegerInstantiation PMD rule to avoid creating instances of already existing BigInteger
2. Avoids unnecessary boxing. Use BigInteger.valueOf(<String/primitive>) where possible
3. Avoids eager instantiation

What is the link to the Apache JIRA

https://issues.apache.org/jira/browse/HDDS-14955

How was this patch tested?

CI: https://github.com/ptlrs/ozone/actions/runs/23931631050

[adoroszlai]

Thanks @ptlrs for the patch. There is one more occurrence with eager instantiation (as linked in the task description). The rest LGTM.

ozone/hadoop-hdds/framework/src/main/java/org/apache/hadoop/hdds/security/x509/certificate/client/DefaultCertificateClient.java

Lines 281 to 284 in f2faf49

	private synchronized void updateCachedSubCAId(String s) {
	BigInteger candidateNewId = new BigInteger(s);
	if (caCertId == null
	|| new BigInteger(caCertId).compareTo(candidateNewId) < 0) {

[ptlrs]

Thanks for updating the PR and the reviews @adoroszlai