Tasks should not run with root privileges

[bdlink]

In the Tekton tasks, bundle-all.yaml has 7 instances and container-all.yaml hs 5 instances of

securityContext: runAsUser: 0

Running containers with root privilege is arguably bad practice and should be removed or justified.

[lmzuccarelli]

This is addressed in PR #7.
Will close this issue as soon as we have merged the PR