Check expected set of objects after deletions
Check expected set of objects after deletions

Also commonize GetObjects code
Yubico/pkcs11test,google/pkcs11test,agrandville/pkcs11test,Yubico/pkcs11test,google/pkcs11test,google/pkcs11test,Yubico/pkcs11test,google/pkcs11test,agrandville/pkcs11test,Yubico/pkcs11test