fix(osm-crds): use busybox base image
The `bitnami/kubectl` used as the base for the `osm-crds` image has
several reported vulnerabilities found with `trivy`. This change uses
`busybox` as the base image instead which has no reported
vulnerabilities.
-FROM bitnami/kubectl
+FROM busybox:1.33
+RUN wget https://storage.googleapis.com/kubernetes-release/release/v1.22.2/bin/linux/amd64/kubectl -O /bin/kubectl && \
+ chmod +x /bin/kubectl
COPY * /osm-crds/
+ENTRYPOINT ["/bin/kubectl"]
