resolve_minidumps.py's minidump_stackwalk call hits OOM on Centos7

When looking into fixing IMPALA-11909 to enable running resolve_minidumps.py from finalize.sh, testing on Centos 7 showed that the minidump_stackwalk invocation from resolve_minidumps.py went haywire and used all the system's memory.

resolve_minidumps.py is unique in processing all applicable system libraries. If some system library had corrupt symbols, it could cause minidump_stackwalk to get into an infinite loop.

We should track down the offending library, but we should also run minidump_stackwalk with a limit on its memory usage to avoid using all the system memory.