teuthology/task/install/valgrind.supp: new rocksdb leak

teuthology/task/install/valgrind.supp: new rocksdb leak

<error>
  <unique>0x7</unique>
  <tid>1</tid>
  <kind>Leak_StillReachable</kind>
  <xwhat>
    <text>40 bytes in 1 blocks are still reachable in loss record 8 of 21</text>
    <leakedbytes>40</leakedbytes>
    <leakedblocks>1</leakedblocks>
  </xwhat>
  <stack>
    <frame>
      <ip>0x9EAF203</ip>
      <obj>/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so</obj>
      <fn>operator new(unsigned long)</fn>
      <dir>/builddir/build/BUILD/valgrind-3.12.0/coregrind/m_replacemalloc</dir>
      <file>vg_replace_malloc.c</file>
      <line>334</line>
    </frame>
    <frame>
      <ip>0xBDB237</ip>
      <obj>/usr/bin/ceph-mon</obj>
      <fn>allocate</fn>
      <dir>/opt/rh/devtoolset-7/root/usr/include/c++/7/ext</dir>
      <file>new_allocator.h</file>
      <line>111</line>
    </frame>
    <frame>
      <ip>0xBDB237</ip>
      <obj>/usr/bin/ceph-mon</obj>
      <fn>allocate</fn>
      <dir>/opt/rh/devtoolset-7/root/usr/include/c++/7/bits</dir>
      <file>alloc_traits.h</file>
      <line>436</line>
    </frame>
    <frame>
      <ip>0xBDB237</ip>
      <obj>/usr/bin/ceph-mon</obj>
      <fn>std::__detail::_Hashtable_alloc&lt;std::allocator&lt;std::__detail::_Hash_node&lt;void const*, false&gt; &gt; &gt;::_M_allocate_buckets(unsigned long) [clone .isra.181]</fn>
      <dir>/opt/rh/devtoolset-7/root/usr/include/c++/7/bits</dir>
      <file>hashtable_policy.h</file>
      <line>2107</line>
    </frame>
    <frame>
      <ip>0xBDDA87</ip>
      <obj>/usr/bin/ceph-mon</obj>
      <fn>_M_allocate_buckets</fn>
      <dir>/opt/rh/devtoolset-7/root/usr/include/c++/7/bits</dir>
      <file>hashtable.h</file>
      <line>354</line>
    </frame>
    <frame>
      <ip>0xBDDA87</ip>
      <obj>/usr/bin/ceph-mon</obj>
      <fn>_M_rehash_aux</fn>
      <dir>/opt/rh/devtoolset-7/root/usr/include/c++/7/bits</dir>
      <file>hashtable.h</file>
      <line>2098</line>
    </frame>
    <frame>
      <ip>0xBDDA87</ip>
      <obj>/usr/bin/ceph-mon</obj>
      <fn>std::_Hashtable&lt;rocksdb::ThreadStatusData*, rocksdb::ThreadStatusData*, std::allocator&lt;rocksdb::ThreadStatusData*&gt;, std::__detail::_Identity, std::equal_to&lt;rocksdb::ThreadStatusData*&gt;, std::hash&lt;rocksdb::ThreadStatusData*&gt;, std::__detail::_Mod_range_hashing, std::__detail::_Default_ra
nged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits&lt;false, true, true&gt; &gt;::_M_rehash(unsigned long, unsigned long const&amp;)</fn>
      <dir>/opt/rh/devtoolset-7/root/usr/include/c++/7/bits</dir>
      <file>hashtable.h</file>
      <line>2077</line>
    </frame>
    <frame>
      <ip>0xBDDBCA</ip>
      <obj>/usr/bin/ceph-mon</obj>
      <fn>std::_Hashtable&lt;rocksdb::ThreadStatusData*, rocksdb::ThreadStatusData*, std::allocator&lt;rocksdb::ThreadStatusData*&gt;, std::__detail::_Identity, std::equal_to&lt;rocksdb::ThreadStatusData*&gt;, std::hash&lt;rocksdb::ThreadStatusData*&gt;, std::__detail::_Mod_range_hashing, std::__detail::_Default_ra
nged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits&lt;false, true, true&gt; &gt;::_M_insert_unique_node(unsigned long, unsigned long, std::__detail::_Hash_node&lt;rocksdb::ThreadStatusData*, false&gt;*)</fn>
      <dir>/opt/rh/devtoolset-7/root/usr/include/c++/7/bits</dir>
      <file>hashtable.h</file>
      <line>1724</line>
    </frame>
    <frame>
      <ip>0xBDC6BE</ip>
      <obj>/usr/bin/ceph-mon</obj>
      <fn>_M_insert&lt;rocksdb::ThreadStatusData* const&amp;, std::__detail::_AllocNode&lt;std::allocator&lt;std::__detail::_Hash_node&lt;rocksdb::ThreadStatusData*, false&gt; &gt; &gt; &gt;</fn>
      <dir>/opt/rh/devtoolset-7/root/usr/include/c++/7/bits</dir>
      <file>hashtable.h</file>
      <line>1828</line>
    </frame>
    <frame>
      <ip>0xBDC6BE</ip>
      <obj>/usr/bin/ceph-mon</obj>
      <fn>insert</fn>
      <dir>/opt/rh/devtoolset-7/root/usr/include/c++/7/bits</dir>
      <file>hashtable_policy.h</file>
      <line>843</line>
    </frame>
    <frame>
      <ip>0xBDC6BE</ip>
      <obj>/usr/bin/ceph-mon</obj>
      <fn>insert</fn>
      <dir>/opt/rh/devtoolset-7/root/usr/include/c++/7/bits</dir>
      <file>unordered_set.h</file>
      <line>420</line>
    </frame>
    <frame>
      <ip>0xBDC6BE</ip>
      <obj>/usr/bin/ceph-mon</obj>
      <fn>rocksdb::ThreadStatusUpdater::RegisterThread(rocksdb::ThreadStatus::ThreadType, unsigned long)</fn>
      <dir>/usr/src/debug/ceph-13.0.0-3917-g948b47a/src/rocksdb/monitoring</dir>
      <file>thread_status_updater.cc</file>
      <line>25</line>
    </frame>
    <frame>
      <ip>0xBEEE09</ip>
      <obj>/usr/bin/ceph-mon</obj>
      <fn>rocksdb::ThreadPoolImpl::Impl::BGThreadWrapper(void*)</fn>
      <dir>/usr/src/debug/ceph-13.0.0-3917-g948b47a/src/rocksdb/util</dir>
      <file>threadpool_imp.cc</file>
      <line>258</line>
    </frame>
    <frame>
      <ip>0xC1AF0E</ip>
      <obj>/usr/bin/ceph-mon</obj>
      <fn>execute_native_thread_routine</fn>
    </frame>
    <frame>
      <ip>0xA8FDE24</ip>
      <obj>/usr/lib64/libpthread-2.17.so</obj>
      <fn>start_thread</fn>
    </frame>
    <frame>
      <ip>0xD75234C</ip>
      <obj>/usr/lib64/libc-2.17.so</obj>
      <fn>clone</fn>
    </frame>
  </stack>
</error>

Signed-off-by: Sage Weil <sage@redhat.com>