fix warnings flagged by ArgumentSelectionDefectChecker · ben-manes/caffeine@8186ff8

Spotbugs: jcache/src/test/java/com/github/benmanes/caffeine/jcache/CacheProxyTest.java#L131

[BooleanParameter] Use parameter comments to document ambiguous literals

Spotbugs: jcache/src/test/java/com/github/benmanes/caffeine/jcache/event/JCacheEvictionListenerTest.java#L61

[BooleanParameter] Use parameter comments to document ambiguous literals

Spotbugs: jcache/src/test/java/com/github/benmanes/caffeine/jcache/event/JCacheEvictionListenerTest.java#L61

[BooleanParameter] Use parameter comments to document ambiguous literals

Spotbugs: jcache/src/test/java/com/github/benmanes/caffeine/jcache/event/EventDispatcherTest.java#L85

[BooleanParameter] Use parameter comments to document ambiguous literals

Spotbugs: jcache/src/test/java/com/github/benmanes/caffeine/jcache/event/EventDispatcherTest.java#L85

[BooleanParameter] Use parameter comments to document ambiguous literals

Spotbugs: jcache/src/test/java/com/github/benmanes/caffeine/jcache/event/EventDispatcherTest.java#L95

[BooleanParameter] Use parameter comments to document ambiguous literals

Spotbugs: jcache/src/test/java/com/github/benmanes/caffeine/jcache/event/EventDispatcherTest.java#L95

[BooleanParameter] Use parameter comments to document ambiguous literals

Spotbugs: jcache/src/test/java/com/github/benmanes/caffeine/jcache/event/EventDispatcherTest.java#L104

[BooleanParameter] Use parameter comments to document ambiguous literals

Spotbugs: jcache/src/test/java/com/github/benmanes/caffeine/jcache/event/EventDispatcherTest.java#L104

[BooleanParameter] Use parameter comments to document ambiguous literals

Spotbugs: jcache/src/test/java/com/github/benmanes/caffeine/jcache/event/EventDispatcherTest.java#L106

[BooleanParameter] Use parameter comments to document ambiguous literals

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