Update e2e test script to Pipelines v0.32.0

Prior to this commit we were using Pipelines 0.28 for running e2e tests
in the Catalog.

This commit updates the pipelines version used during testing to 0.32.0,
which was released today.

After making this change one of the steps in an Orka Task is now failing
due to a naming conflict. This commit also renames the step to work
around the issue.

task/orka-init/0.1/orka-init.yaml

@@ -72,7 +72,7 @@ spec:
         The name of the key in the VM name config map, which stores the name of the generated VM configuration.
       default: vm-name
   steps:
-    - name: init
+    - name: orka-init
       image: docker.io/macstadium/orka-tekton-runner:2020-10-23-a93757dc-0.1@sha256:e8ed3370dcb91cdb8bcd4e9a7e9f6652879d80acdab9644cda69a98cd8c93339
       securityContext:
         privileged: true

test/e2e-tests.sh

@@ -17,7 +17,7 @@
 # Configure the number of parallel tests running at the same time, start from 0
 MAX_NUMBERS_OF_PARALLEL_TASKS=4 # => 5
 
-export RELEASE_YAML=https://github.com/tektoncd/pipeline/releases/download/v0.28.1/release.yaml
+export RELEASE_YAML=https://github.com/tektoncd/pipeline/releases/download/v0.32.0/release.yaml
 
 source $(dirname $0)/../vendor/github.com/tektoncd/plumbing/scripts/e2e-tests.sh
 source $(dirname $0)/e2e-common.sh