fix checking in paging test
fix checking in paging test

test test_tags_paging_with_differenet_filters checked that second page
will have another element than first page. but second page sometimes doesn't 
have it due to sorting.
just check that second page has more elements than first filter suites.

Change-Id: I930e3129e9e6e6c3797dd30b24aef6c9d8749a0d

stackforge/ec2-api,hayderimran7/ec2-api,openstack/ec2-api,stackforge/ec2-api,openstack/ec2-api,hayderimran7/ec2-api