Fix ps_not_windows test for -all-static build which cannot load plugins.

mysql-test/include/have_dynamic_loading.inc

+-- require r/have_dynamic_loading.require
+disable_query_log;
+show variables like 'have_dynamic_loading';
+enable_query_log;

mysql-test/t/ps_not_windows.test

@@ -2,6 +2,8 @@
 --source include/not_embedded.inc
 # Non-windows specific ps tests.
 --source include/not_windows.inc
+# Requires ability to install plugins.
+--source include/have_dynamic_loading.inc
 
 #
 # Bug #20665: All commands supported in Stored Procedures should work in