This PR adds the `dns:read` and `dns:edit` permissions to the required
set of permissions checked before deploying an ENR tree to Cloudflare.
These permissions are necessary for a successful publish.
**Background**:
The current logic for `devp2p dns to-cloudflare` checks for `zone:edit`
and `zone:read` permissions. However, when running the command with only
these two permissions, the following error occurs:
```
wrong permissions on zone REMOVED-ZONE: map[#zone:edit:false #zone:read:true]
```
Adding `zone:read` and `zone:edit` to the API token led to a different
error:
```
INFO [08-19|14:06:16.782] Retrieving existing TXT records on pos-nodes.hardfork.dev
Authentication error (10000)
```
This suggested that additional permissions were required. I added
`dns:read`, but encountered another error:
```
INFO [08-19|14:11:42.342] Retrieving existing TXT records on pos-nodes.hardfork.dev
INFO [08-19|14:11:42.851] Updating DNS entries
failed to publish REMOVED.pos-nodes.hardfork.dev: Authentication error (10000)
```
Finally, after adding both `dns:read` and `dns:edit` permissions, the
command executed successfully with the following output:
```
INFO [08-19|14:13:07.677] Checking Permissions on zone REMOVED-ZONE
INFO [08-19|14:13:08.014] Retrieving existing TXT records on pos-nodes.hardfork.dev
INFO [08-19|14:13:08.440] Updating DNS entries
INFO [08-19|14:13:08.440] "Updating pos-nodes.hardfork.dev from \"enrtree-root:v1 e=FSED3EDKEKRDDFMCLP746QY6CY l=FDXN3SN67NA5DKA4J2GOK7BVQI seq=1 sig=Glja2c9RviRqOpaaHR0MnHsQwU76nJXadJwFeiXpp8MRTVIhvL0LIireT0yE3ETZArGEmY5Ywz3FVHZ3LR5JTAE\" to \"enrtree-root:v1 e=AB66M4ULYD5OYN4XFFCPVZRLUM l=FDXN3SN67NA5DKA4J2GOK7BVQI seq=1 sig=H8cqDzu0FAzBplK4g3yudhSaNtszIebc2aj4oDm5a5ZE5PAg-xpCnQgVE_53CsgsqQpalD9byafx_FrUT61sagA\""
INFO [08-19|14:13:16.932] Updated DNS entries new=32 updated=1 untouched=100
INFO [08-19|14:13:16.932] Deleting stale DNS entries
INFO [08-19|14:13:24.663] Deleted stale DNS entries count=31
```
With this PR, the required permissions for deploying an ENR tree to
Cloudflare now include `zone:read`, `zone:edit`, `dns:read`, and
`dns:edit`. The initial check now includes all of the necessary
permissions and indicates in the error message which permissions are
missing:
```
INFO [08-19|14:17:20.339] Checking Permissions on zone REMOVED-ZONE
wrong permissions on zone REMOVED-ZONE: map[#dns_records:edit:false #dns_records:read:false #zone:edit:false #zone:read:true]
```
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