bump test timeouts so that functional tests run in valgrind

contrib/valgrind.supp

@@ -184,3 +184,16 @@
    ...
    fun:_ZN5BCLog6Logger12StartLoggingEv
 }
+{
+   Suppress BCLog::Logger::StartLogging() still reachable memory warning
+   Memcheck:Leak
+   match-leak-kinds: reachable
+   fun:malloc
+   ...
+   fun:_ZN5BCLog6Logger12StartLoggingEv
+}
+{
+   Suppress rest_blockhash_by_height Conditional jump or move depends on uninitialised value(s)
+   Memcheck:Cond
+   fun:_ZL24rest_blockhash_by_heightP11HTTPRequestRKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE
+}