some tests are very slow in the ps2 protocol

for example, see funcs_1.innodb_views.

Note, how long it takes to run it in normal protocol, note, how long it takes to run it in --ps protocol. Then remove disable_ps2_protocol lines from it and time it again.

on my laptop, debug build. in --ps-protocol I get

funcs_1.innodb_views 'innodb'            [ pass ]   3045

--------------------------------------------------------------------------

Spent 3.045 of 6 seconds executing testcases

but if I remove disable_ps2_protocol it becomes

funcs_1.innodb_views 'innodb'            [ pass ]  3047412

--------------------------------------------------------------------------

Spent 3047.412 of 3050 seconds executing testcases

note the default timeout is 900 seconds, the above was run with --testcase-timeout=9000