Don't create stacks in the moolumi org

[cnunciato]

About a month ago, the pulumi user was apparently removed from the moolumi org in staging, which caused the test-infra-setup test (which creates stacks in that org) to begin failing with 404 errors. This change fixes that by removing the explicit moolumi org setting and allowing these stacks to be created in the pulumi user's regular account, as the rest of the tests in this repo do.

Fixes #1503.

[pulumi-staging[bot]]

:tropical_drink: The Update for pulumi/k8s-ci-cluster/7ad4e04bcb26e71f4b0a6f22d26cd6f41602e6a7-1529 was successful.

Resource Changes

    Name                                                          Type                                        Operation
+   primary-node-pool                                             gcp:container/nodePool:NodePool             create
+   gke                                                           pulumi:providers:kubernetes                 create
+   k8s-ci-cluster-7ad4e04bcb26e71f4b0a6f22d26cd6f41602e6a7-1529  pulumi:pulumi:Stack                         create
+   multicloud                                                    pulumi-kubernetes:ci:GkeCluster             create
+   password                                                      random:index/randomPassword:RandomPassword  create
+   ephemeral-ci-cluster                                          gcp:container/cluster:Cluster               create

[pulumi-staging[bot]]

:tropical_drink: The Destroy for pulumi/k8s-ci-cluster/7ad4e04bcb26e71f4b0a6f22d26cd6f41602e6a7-1529 was successful.

Resource Changes

    Name                  Type                                        Operation
-   gke                   pulumi:providers:kubernetes                 delete
-   primary-node-pool     gcp:container/nodePool:NodePool             delete
-   ephemeral-ci-cluster  gcp:container/cluster:Cluster               delete
-   password              random:index/randomPassword:RandomPassword  delete