security-manager: fix tests related to privacy privileges

security-manager: fix tests related to privacy privileges

When application is registered in security-manager with privileges
that should be set as privacy, it is required to first register the
app in security-privilege-manager. Otherwise, when security-manager
checks if a privilege is privacy, it will always see privileges as
non-privacy.

This patch fixes the following tests:
- security_manager_ap1_app_policy_fetch_for_self
- security_manager_18_privacy_manager_privacy_related_privileges_policy_install_remove
- security_manager_19a_privacy_manager_privacy_related_privileges_policy_hybrid
- security_manager_19b_privacy_manager_privacy_related_privileges_policy_no_hybrid
- security_manager_20_privacy_manager_privacy_related_privileges_policy_admin_check

Change-Id: I34ec671f02a42e175ecbd53c428d17fcee65e909
Signed-off-by: Rafal Krypa <r.krypa@samsung.com>