BZ 1846705 - Possible memory leak detected in pcp-atop

f30aff90b qa: add valgrind suppressions needed for valgrind 3.16

diff --git a/qa/valgrind-suppress-3.16.0 b/qa/valgrind-suppress-3.16.0

new file mode 100644

index 000000000..515591747

--- /dev/null

+++ b/qa/valgrind-suppress-3.16.0

@@ -0,0 +1,27 @@

+# qa/1080 and qa/490 and qa/386 and qa/459 on Fedora 32

+# at 0x483880B: malloc (vg_replace_malloc.c:299)

+# by 0x4A0D490: tsearch (in /usr/lib64/libc-2.28.so)

+# by 0x4871EA6: __pmFindPDUBuf (pdubuf.c:126)

+# ...

+{

+   tsearch

+   Memcheck:Leak

+   match-leak-kinds: possible

+   fun:malloc

+   fun:tsearch

+   fun:__pmFindPDUBuf

+   ...

+}

+

+# qa/1080 and qa/490 and qa/386 and qa/459 on Fedora 32

+# at 0x483880B: malloc (vg_replace_malloc.c:299)

+# by 0x4871E5F: __pmFindPDUBuf (pdubuf.c:115)

+# ...

+{

+   findpdubuf

+   Memcheck:Leak

+   match-leak-kinds: possible

+   fun:malloc

+   fun:__pmFindPDUBuf

+   ...

+}