Description of Problem:
Topology related cases are not included in current aws-csi-driver e2e ci test in https://testgrid.k8s.io/redhat-openshift-ocp-release-4.7-informing#release-openshift-ocp-installer-e2e-aws-csi-4.7, seems the Capabilities of topology is not set, we could add them to enlarge the test coverage.

Following is the pass result running locally when I set it to true: 
passed: (1m17s) 2020-11-17T06:18:08 "External Storage [Driver: ebs.csi.aws.com] [Testpattern: Dynamic PV (delayed binding)] topology should provision a volume and schedule a pod with AllowedTopologies"
passed: (10.9s) 2020-11-17T06:18:19 "External Storage [Driver: ebs.csi.aws.com] [Testpattern: Dynamic PV (delayed binding)] topology should fail to schedule a pod which has topologies that conflict with AllowedTopologies"
passed: (1m23s) 2020-11-17T06:20:48 "External Storage [Driver: ebs.csi.aws.com] [Testpattern: Dynamic PV (immediate binding)] topology should provision a volume and schedule a pod with AllowedTopologies"
passed: (35.9s) 2020-11-17T06:21:24 "External Storage [Driver: ebs.csi.aws.com] [Testpattern: Dynamic PV (immediate binding)] topology should fail to schedule a pod which has topologies that conflict with AllowedTopologies"

Version-Release number of selected component (if applicable):
4.7.0-0.nightly-2020-11-12-200927

How Reproducible:
Always


Steps to Reproduce:

Actual Results:

Expected Results:
Topology related cases could be included in current aws-csi-driver e2e ci test.