test for two password validation plugins

when many plugins are active, all must approve the password

mysql-test/suite/plugins/r/two_password_validations.result

+install soname "simple_password_check";
+grant select on *.* to Fff_fff1 identified by '1fff_ffF';
+drop user Fff_fff1;
+install soname "cracklib_password_check";
+grant select on *.* to foobar identified by 'q$%^&*R1234ty';
+drop user foobar;
+grant select on *.* to Fff_fff1 identified by '1fff_ffF';
+ERROR HY000: Your password does not satisfy the current policy requirements
+show warnings;
+Level	Code	Message
+Warning	1819	cracklib: it does not contain enough DIFFERENT characters
+Error	1819	Your password does not satisfy the current policy requirements
+grant select on *.* to foobar identified by 'q-%^&*rty';
+ERROR HY000: Your password does not satisfy the current policy requirements
+show warnings;
+Level	Code	Message
+Error	1819	Your password does not satisfy the current policy requirements
+uninstall plugin simple_password_check;
+grant select on *.* to foobar identified by 'q-%^&*rty';
+drop user foobar;
+uninstall plugin cracklib_password_check;

mysql-test/suite/plugins/t/two_password_validations.test

+--source include/not_embedded.inc
+
+if (!$CRACKLIB_PASSWORD_CHECK_SO) {
+  skip No CRACKLIB_PASSWORD_CHECK plugin;
+}
+
+if (!$SIMPLE_PASSWORD_CHECK_SO) {
+  skip No SIMPLE_PASSWORD_CHECK plugin;
+}
+
+let $only_simple=grant select on *.* to Fff_fff1 identified by '1fff_ffF';
+let $only_crack=grant select on *.* to foobar identified by 'q-%^&*rty';
+
+install soname "simple_password_check";
+
+eval $only_simple;
+drop user Fff_fff1;
+
+install soname "cracklib_password_check";
+
+grant select on *.* to foobar identified by 'q$%^&*R1234ty';
+drop user foobar;
+
+--error ER_NOT_VALID_PASSWORD
+eval $only_simple;
+show warnings;
+
+--error ER_NOT_VALID_PASSWORD
+eval $only_crack;
+show warnings;
+
+uninstall plugin simple_password_check;
+
+eval $only_crack;
+drop user foobar;
+
+uninstall plugin cracklib_password_check;
+