fix(crd): migration from v1beta1 to v1

Change the version in the CRDs to v1 and make the
necessary movements of the elements to pass the
CRD v1 validations like:
- rename version to versions
- set the defaults for a specific version
- set the schema validation to `x-kubernetes-preserve-unknown-fields`

Also, this PR removes the installation of CRDs that are already
migrated to cstor CSI:
- cstorpoolinstances
- cstorvolumeclaims
- cstorvolumepolicies

Signed-off-by: kmova <[email protected]>

Author: kmova

.travis.yml

@@ -18,7 +18,7 @@ jobs:
     - os: linux
       arch: amd64
       env:
-        - RELEASE_TAG_DOWNSTREAM=1
+        - RELEASE_TAG_DOWNSTREAM=0
 
 services:
   - docker