some valgrind suppression rules

they cover mainly nginx and openssl issues

valgrind.suppress

+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   match-leak-kinds: definite
+   fun:malloc
+   fun:CRYPTO_malloc
+   fun:SSL_SESSION_new
+   fun:ssl_get_new_session
+   fun:ssl23_connect
+   fun:ngx_ssl_handshake
+   fun:ngx_http_upstream_ssl_init_connection
+   fun:ngx_http_upstream_send_request_handler
+   fun:ngx_http_upstream_handler
+   fun:ngx_epoll_process_events
+   fun:ngx_process_events_and_timers
+   fun:ngx_single_process_cycle
+   fun:main
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Leak
+   match-leak-kinds: definite
+   fun:malloc
+   fun:ngx_alloc
+   fun:ngx_set_environment
+   fun:ngx_single_process_cycle
+   fun:main
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Free
+   fun:free
+   fun:__libc_freeres
+   fun:_vgnU_freeres
+   fun:__run_exit_handlers
+   fun:exit
+   fun:ngx_master_process_exit
+   fun:ngx_single_process_cycle
+   fun:main
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Param
+   epoll_ctl(event)
+   fun:epoll_ctl
+   fun:ngx_epoll_test_rdhup
+   fun:ngx_epoll_init
+   fun:ngx_event_process_init
+   fun:ngx_single_process_cycle
+   fun:main
+}
+{
+   <insert_a_suppression_name_here>
+   Memcheck:Param
+   epoll_ctl(event)
+   fun:epoll_ctl
+   fun:ngx_epoll_test_rdhup
+   fun:ngx_epoll_init
+   fun:ngx_event_process_init
+   fun:ngx_single_process_cycle
+   fun:main
+}