fix(cloudflare-tunnel-remote/charts): apply securityContext from values.yaml

[bryopsida]

What

The charts/cloudflare-tunnel-remote chart defines values for securityContext:

https://github.com/cloudflare/helm-charts/blob/b85225eb49e1b0b40328c70d4541a27ec5e2b82e/charts/cloudflare-tunnel-remote/values.yaml#L35

and podSecurityContext:

https://github.com/cloudflare/helm-charts/blob/b85225eb49e1b0b40328c70d4541a27ec5e2b82e/charts/cloudflare-tunnel-remote/values.yaml#L30

but does not apply them to the pod template in deployment.

This simply maps the intended securityContext values into the appropriate locations on the template.

How to test

You can verify the template changes by running helm template . inside the remote chart directory.

Evidence

 spec:
      serviceAccountName: release-name-cloudflare-tunnel
      securityContext:
        runAsNonRoot: true
        runAsUser: 65532
      containers:
        - name: cloudflare-tunnel
          securityContext:
            allowPrivilegeEscalation: false
            capabilities:
              drop:
              - ALL
            readOnlyRootFilesystem: true
          image: "cloudflare/cloudflared:2023.5.1"

[bryopsida]

Looks like there's overlap between this and https://github.com/cloudflare/helm-charts/pull/65.