RFR(XS): 8215042: Move serviceability/sa tests from tier1 to tier3.

[Leonid Mesnik]

Hi

Could you please review following fix which moves SA tests from tier1 to tier3. There are some bugs which cause intermittent failures of any test. SA tests fail intermittently are not stable enough for tier1.  
However failures are not very frequent. Also I don't think that putting all test in Problemlist.txt is very good idea because it left SA without any testing at all. 
So now all SA tests which are included in  hotspot_tier3_runtime group.

webrev: http://cr.openjdk.java.net/~lmesnik/8215042/webrev.00/ <http://cr.openjdk.java.net/~lmesnik/8215042/webrev.00/>
bug: https://bugs.openjdk.java.net/browse/JDK-8215042 <https://bugs.openjdk.java.net/browse/JDK-8215042>

Leonid
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