test/openssl/utils.rb: Extend the timeout for armv7l

https://rubyci.org/logs/rubyci.s3.amazonaws.com/scw-9d6766/ruby-master/log/20190607T051708Z.fail.html.gz

test/openssl/utils.rb

@@ -266,7 +266,7 @@ class OpenSSL::SSLTestCase < OpenSSL::TestCase
         pend = nil
         threads.each { |th|
           begin
-            timeout = EnvUtil.apply_timeout_scale(10)
+            timeout = EnvUtil.apply_timeout_scale(30)
             th.join(timeout) or
               th.raise(RuntimeError, "[start_server] thread did not exit in #{ timeout } secs")
           rescue (defined?(MiniTest::Skip) ? MiniTest::Skip : Test::Unit::PendedError)