Add comments about disabled tests and JVM args #211

Job	Run time
Linux (JDK 8), oldest Guava, America/New_York Timezone	9m 58s
Windows (JDK 17)	13m 50s
Windows (JDK 8)	15m 44s
Linux (JDK 8), latest Guava, America/New_York Timezone	11m 53s
Error Prone (JDK 11), latest Guava	4m 8s
CheckerFramework (JDK 11)	10m 23s
CheckerFramework (JDK 11), oldest Guava	10m 3s
Linux (JDK 11), Avatica main	11m 58s
Linux (JDK 11), Pacific/Chatham Timezone	9m 55s
Linux (JDK 17)	9m 48s
Linux (JDK 19)	9m 16s
macOS (JDK 19)	39m 15s
Linux (JDK 8) Slow Tests	0s
Druid Tests	7m 6s
	2h 43m 17s

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