[UNDERTOW-2097] DMI_RANDOM_USED_ONLY_ONCE error reported by spotbugs #1325
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Let's try to reuse instance of
SecureRandom
class when possible. Thischange is attempt to fix error identified by SpotBugs plugin and
described in [1].
[1] https://spotbugs.readthedocs.io/en/stable/bugDescriptions.html#dmi-random-object-created-and-used-only-once-dmi-random-used-only-once
https://issues.redhat.com/browse/UNDERTOW-2097