MDEV-11718 5.5 rpl and federated tests massively fail in buildbot with valgrind

Problem:- When MariaDB is compiled with jemalloc support, And we run mtr valgrind
test, valgrind interferes with libjemalloc and returns false errors.

Solution:- Run valgrind with --soname-synonyms=somalloc=libjemalloc* or
--soname-synonyms=somalloc=NONE depending on whether we are dynamically
linking or statically linking.
Signed-off-by: Sachin Setiya <sachin.setiya@mariadb.com>

mysql-test/mysql-test-run.pl

@@ -6193,6 +6193,15 @@ sub valgrind_arguments {
     mtr_add_arg($args, "--num-callers=16");
     mtr_add_arg($args, "--suppressions=%s/valgrind.supp", $glob_mysql_test_dir)
       if -f "$glob_mysql_test_dir/valgrind.supp";
+    my $temp= `ldd $ENV{MTR_BINDIR}/sql/mysqld | grep 'libjemalloc'`;
+    if ($temp)
+    {
+      mtr_add_arg($args, "--soname-synonyms=somalloc=libjemalloc*");
+    }
+    else
+    {
+      mtr_add_arg($args, "--soname-synonyms=somalloc=NONE");
+    }
   }
 
   # Add valgrind options, can be overriden by user

mysql-test/valgrind.supp

@@ -1074,3 +1074,13 @@
    ...
    fun:pthread_create*
 }
+
+{
+   Memory Leak in loader and valgrind malloc
+   Memcheck:Leak
+   match-leak-kinds:reachable
+   obj:*/vgpreload_memcheck*.so
+   ...
+   obj:*/ld-*.so
+   ...
+}