QA: Test multiple instance specs
QA: Test multiple instance specs

The test of the interaction between policy and instances is extended.

Signed-off-by: Bernardo Dal Seno <dcdd79c5479cb9d1329ec01d126f02cb045aa103@google.com>
Reviewed-by: Helga Velroyen <2d0126b1ec6f9ec5cbec4a7012aa14faeaef10f5@google.com>

leshchevds/ganeti,ganeti-github-testing/ganeti-test-1,apyrgio/snf-ganeti,apyrgio/ganeti,yiannist/ganeti,ganeti/ganeti,ganeti-github-testing/ganeti-test-1,ganeti/ganeti,mbakke/ganeti,onponomarev/ganeti,ganeti/ganeti,dimara/ganeti,yiannist/ganeti,apyrgio/ganeti,onponomarev/ganeti,leshchevds/ganeti,yiannist/ganeti,bitemyapp/ganeti,mbakke/ganeti,apyrgio/snf-ganeti,leshchevds/ganeti,mbakke/ganeti,andir/ganeti,andir/ganeti,dimara/ganeti,bitemyapp/ganeti,andir/ganeti,grnet/snf-ganeti,grnet/snf-ganeti