Merge #17770: test: bump test timeouts so that functional tests run in valgrind

2d23082cbe bump test timeouts so that functional tests run in valgrind (Micky Yun Chan)

Pull request description:

  ci/tests: Bump timeouts so all functional tests run on travis in valgrind #17763

Top commit has no ACKs.

Tree-SHA512: 5a8c6e2ea02b715facfcb58c761577be15ae58c45a61654beb98c2c2653361196c2eec521bcae4a9a1bab8e409d6807de771ef4c46d3d05996ae47a22d499d54

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
+}