RFR(S): 8219999: TestJFREvents container test should not use jdk.CPUInformation event for container CPU values

[mikhailo.seledtsov at oracle.com]

Please review this change that updates the TestJFREvents container test.

After more discussions within JFR and Runtime team, we have decided on 
the following:
   - CPUInformation is intended to report hardware-based information,
     and should not be used to report OS or Container related information
   - the active_processor_count information should be reported in a 
Container-specific event (see JDK-8203359 for instance),
   - the test TestJFREvents.java should be modified to not use 
CPUInformation.

I decided not to remove the test case, just to disable it and remove 
usage of jdk.CPUInformation.
Once Container info events become available, this test case can be 
used/extended for
testing CPU-related container configuration and info.

     JBS: https://bugs.openjdk.java.net/browse/JDK-8219999
     Webrev: http://cr.openjdk.java.net/~mseledtsov/8219999.00/
     Testing:
        - testing the affected test on container-enabled host


Thank you,
Misha