Bug #33144829: ASAN FAILURE IN AUTH_LDAP_KERBEROS_GLOBAL

The GSS plugin for SASL appears to have leaks. This causes the LDAP
SASL client plugin to fail with ASAN and valgrind.
Fixed by:
1. making sure sasl_client_done is called by the client's deinit method.
2. add vg and asan suppressions to cover the library leaks.

Change-Id: Iceb6fbb2d9483b2fcc51c2a0f004735b288bb4f0

Author: gkodinov

libmysql/authentication_ldap/auth_ldap_sasl_client.cc

@@ -624,7 +624,7 @@ static int initialize_plugin(char *, size_t, int, va_list) {
 static int deinitialize_plugin() {
   delete g_logger_client;
   g_logger_client = nullptr;
-
+  sasl_client_done();
   return 0;
 }
 

mysql-test/lsan.supp

@@ -41,3 +41,6 @@ leak:ldap_initialize
 # It seems some of the SASL plugin have leaks.
 # Both LSAN and Valgrind report leaks.
 leak:sasl_client_add_plugin
+
+# The GSS API plugin for SASL has leaks.
+leak:gss_acquire_cred_from

mysql-test/valgrind.supp

@@ -859,6 +859,48 @@
    fun:_sasl_build_mechlist
 }
 
+# The GSS API client plugin for Sasl has leaks
+{
+   cyrus libsasl2 GSS API leak 1
+   Memcheck:Leak
+   fun:calloc
+   ...
+   fun:gss_init_sec_context
+}
+
+{
+   cyrus libsasl2 GSS API leak 1.1
+   Memcheck:Leak
+   fun:malloc
+   ...
+   fun:gss_init_sec_context
+}
+
+{
+   cyrus libsasl2 GSS API leak 2
+   Memcheck:Leak
+   fun:realloc
+   ...
+   fun:gss_acquire_cred
+}
+
+{
+   cyrus libsasl2 GSS API leak 3
+   Memcheck:Leak
+   fun:calloc
+   ...
+   fun:gss_acquire_cred
+}
+
+{
+   cyrus libsasl2 GSS API leak 4
+   Memcheck:Leak
+   fun:malloc
+   ...
+   fun:gss_acquire_cred
+}
+
+# some more openssl leaks
 {
    OpenSSL still reachable.
    Memcheck:Leak