tests: disable ec2_instance for now (ansible-collections#413)

tests: disable ec2_instance for now

Depends-On: ansible/ansible-zuul-jobs#1005
SUMMARY
Disable ec2_instance until we land:

ansible-collections#411
ansible-collections#406
and figure out how to improve the reliabilty of the test.

e.g of failure: https://890aa13aa78f6724352d-5fecf071b6e8bbf9bfb6df76861c0c6d.ssl.cf1.rackcdn.com/406/8f3c9c688f226433b44c0f21c738cf79190f49f4/check/ansible-test-cloud-integration-aws-py36_1/131d33e/job-output.txt


ISSUE TYPE


Bugfix Pull Reques

COMPONENT NAME
tests

Reviewed-by: Mark Chappell <None>

tests/integration/targets/ec2_instance/aliases

@@ -1,3 +1,4 @@
+disabled
 cloud/aws
 ec2_instance_info
 slow