security-manager-tests: prepare for security-manager integration with cynara

security-manager-tests: prepare for security-manager integration with cynara

Security-manager will soon requires the caller to hold appropriate privilege.
Tests must always call security-manager APIs with Smack label which has
privilege.

This change makes sure that privileged operations from security-tests
are always called with proper Smack label.

It also adapts for the only part of security-manager that already checks
permission of the caller - privacy-manager APIs. The permissions
required for calling privacy-manager APIs have changed, so security-tests
must change them too.

Change-Id: Ib5e046dbf7fef8e8187b2f7f5700f236ef73bbda