ci: use ceph-csi-operator main branch

Use the main branch instead of the release till the following fixes
are available in next release (> v0.2.0)
- ceph/ceph-csi-operator#206
- ceph/ceph-csi-operator#207

Signed-off-by: Praveen M <m.praveen@ibm.com>

Author: iPraveenParihar

build.env

@@ -15,7 +15,11 @@ CSI_IMAGE_VERSION=canary
 CSI_UPGRADE_VERSION=v3.12.1
 
 # ceph-csi-operator version used for e2e test
-CEPH_CSI_OPERATOR_VERSION=v0.2.0
+# TODO: use release tag which includes the bug fixes
+# - https://github.com/ceph/ceph-csi-operator/pull/206
+# - https://github.com/ceph/ceph-csi-operator/pull/207
+# Till then use the main branch instead of the release.
+# CEPH_CSI_OPERATOR_VERSION=main
 
 # Ceph version to use
 BASE_IMAGE=quay.io/ceph/ceph:v19