CLOUDSTACK-8028: Fix test_data.py - Separate virtual_machine dict having userdata key

Signed-off-by: SrikanteswaraRao Talluri <talluri@apache.org>
CLOUDSTACK-8029: Remove unused kaypairs from test_data.py

Signed-off-by: SrikanteswaraRao Talluri <talluri@apache.org>
CLOUDSTACK-8018: Improve code quality - test_redundant_router.py

Signed-off-by: SrikanteswaraRao Talluri <talluri@apache.org>