RFR: 8335710: serviceability/dcmd/vm/SystemDumpMapTest.java and SystemMapTest.java fail on Linux Alpine after 8322475

[Matthias Baesken]

Unfortunately those 2 tests fail now on Linux Alpine (x86_64) :
serviceability/dcmd/vm/SystemDumpMapTest.java

Missing patterns in dump:
0x\\p{XDigit}+-0x\\p{XDigit}+ +\\d+ +[rwsxp-]+ +\\d+ +\\d+ +(4K|8K|16K|64K|2M|16M|64M) +com.*\[vdso\]
test SystemDumpMapTest.jmx(): failure
java.lang.RuntimeException: java.lang.RuntimeException: Missing patterns
at SystemDumpMapTest.run_test(SystemDumpMapTest.java:100)
at SystemDumpMapTest.run(SystemDumpMapTest.java:106)
at SystemDumpMapTest.jmx(SystemDumpMapTest.java:112)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:132)
at org.testng.internal.TestInvoker.invokeMethod(TestInvoker.java:599)
at org.testng.internal.TestInvoker.invokeTestMethod(TestInvoker.java:174)
at org.testng.internal.MethodRunner.runInSequence(MethodRunner.java:46)
at org.testng.internal.TestInvoker$MethodInvocationAgent.invoke(TestInvoker.java:822)
at org.testng.internal.TestInvoker.invokeTestMethods(TestInvoker.java:147)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:146)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:128)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1597)
 ....

Reason is that the vdso lib is not there on all Linux flavors; e.g. we do not seem to have it on our Alpine Linux test system.
So better avoid the check because it is based on false assumptions.

-------------

Commit messages:
 - JDK-8335710

Changes: https://git.openjdk.org/jdk/pull/20072/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20072&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8335710
  Stats: 2 lines in 1 file changed: 0 ins; 2 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/20072.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20072/head:pull/20072

PR: https://git.openjdk.org/jdk/pull/20072