DevWorkspace Operator crashes with OOMKilled

[sleshchenko]

That's a strange bug that happened on DevSanbox Prod.
To reproduce it we may try to redo load testing Tina did.

> kc get pod devworkspace-controller-manager-*** -o=yaml
 - containerID: cri-o://4e196253a9478ddc52a19bedadf162561fcc2b2aa4a6d3d2b62d143601f87266
 image: registry.redhat.io/devworkspace/devworkspace-rhel8-operator@sha256:e68ec2fe7ac27e59641bdfc7794ae99fdfaa60e5b6d0cc0e3f20ab3f7a31bc11
 imageID: registry.redhat.io/devworkspace/devworkspace-rhel8-operator@sha256:e68ec2fe7ac27e59641bdfc7794ae99fdfaa60e5b6d0cc0e3f20ab3f7a31bc11
 lastState:
 terminated:
 containerID: cri-o://4e196253a9478ddc52a19bedadf162561fcc2b2aa4a6d3d2b62d143601f87266
 exitCode: 137
 finishedAt: "2021-09-23T09:22:13Z"
 reason: OOMKilled
 startedAt: "2021-09-23T09:21:33Z"
 name: devworkspace-controller
 ready: false
 restartCount: 7
 started: false
 state:
 waiting:
 message: back-off 5m0s restarting failed container=devworkspace-controller
 pod=devworkspace-controller-manager-6c99cdf947-ch5bg_openshift-operators(d29753b5-6155-4ff9-a920-c27457242e5b)
 reason: CrashLoopBackOff

DevWorkspace hanged on Waiting for SA, anything reconcile loop related appeared in DWO logs.