tests: Set p11_child_timeout to 30 in tests
Ticket:
https://fedorahosted.org/sssd/ticket/2773
Add way to set pam specific options in
pam_test_setup adn use it to set the
p11_child_timeout value to 30.
Reviewed-by: Lukáš Slebodník <lslebodn@redhat.com>
Reviewed-by: Pavel Reichl <preichl@redhat.com>