Add <disables> example for platform

[llxia]

Add <disables> example for platform in https://github.com/adoptium/TKG/tree/master/examples

For example:

<disables>
	<disable>
		<comment>disable on JDK8 x86-64_linux</comment>
		<version>8</version>
		<platform>x86-64_linux</platform>
	</disable>
</disables>

<disables>
	<disable>
		<comment>disable on eclipse vendor</comment>
		<vendor>eclipse</vendor>
	</disable>
	<disable>
		<comment>Only applicable on aix, pliunx, xlinux, wins64 and zlinux atm</comment>
		<platform>^((?!(ppc64_aix|ppc64le_linux|x86-64_linux|x86-64_windows|s390x_linux)).)*$</platform>
	</disable>
</disables>