RFR(S): 8179317: [TESTBUG] rewrite runtime shell tests in java

[mikhailo.seledtsov at oracle.com]

Please review this change that converts HotSpot/Runtime shell tests to Java

     JBS: https://bugs.openjdk.java.net/browse/JDK-8179317
     Webrev: http://cr.openjdk.java.net/~mseledtsov/8179317.00/
     Testing:
        Ran the affected tests


Thank you,
Misha