tools/launcher/RunpathTest.java checks wrong RPATH on aarch32

Test tools/launcher/RunpathTest.java determines the RPATH to check using the getJreArch() method (https://github.com/openjdk/aarch32-port-jdk8u/blob/fe35578af8d59f80ec21548ea83b9ca109721de1/jdk/test/tools/launcher/TestHelper.java#L244) which in turns for aarch32 uses the System os.arch property value.

os.arch on aarch32 is "arm", but the built jre image has a library RPATH of aarch32, hence RunPathTest fails:

###TestError###: string <.*R(UN)?PATH.*\$ORIGIN/../lib/arm.*> not found
++++Begin Test Info++++
Test Status: FAIL
++++Test Environment++++
  PATH=/bin:/usr/bin:/usr/sbin
  DISPLAY=:0
  CLASSPATH=/ssd/jenkins/workspace/Grinder/openjdkbinary/j2sdk-image/lib/tools.jar:/ssd/jenkins/workspace/Grinder/jvmtest/openjdk/jtreg/lib/javatest.jar:/ssd/jenkins/workspace/Grinder/jvmtest/openjdk/jtreg/lib/jtreg.jar
  HOME=/home/jenkins
++++Test Output++++
  
  Dynamic section at offset 0xee8 contains 30 entries:
    Tag Type Name/Value
   0x00000001 (NEEDED) Shared library: [libatomic.so.1]
   0x00000001 (NEEDED) Shared library: [libpthread.so.0]
   0x00000001 (NEEDED) Shared library: [libjli.so]
   0x00000001 (NEEDED) Shared library: [libdl.so.2]
   0x00000001 (NEEDED) Shared library: [libc.so.6]
   0x0000000e (SONAME) Library soname: [lib.so]
   0x0000000f (RPATH) Library rpath: [$ORIGIN/../lib/aarch32/jli:$ORIGIN/../lib/aarch32]