Backport of fix a panic in the CLI when deleting an acl policy with an unknown name into release/1.16.x

[hc-github-team-consul-core]

Backport

This PR is auto-generated from #19679 to be assessed for backporting due to the inclusion of the label backport/1.16.

The below text is copied from the body of the original PR.

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Description

This fix a panic in the CLI when deleting a policy using its name and that name do not exist on the server.

consul acl policy delete -namespace david-test -datacenter us-east-infra -name namespace-management

panic: runtime error: invalid memory address or nil pointer dereference

[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x1012db5]




goroutine 1 [running]:

github.com/hashicorp/consul/command/acl.GetPolicyIDByName(...)

/Users/dayachi/git/consul-enterprise/command/acl/acl_helpers.go:102

github.com/hashicorp/consul/command/acl/policy/delete.(*cmd).Run(0xc000d62050, {0xc000072180?, 0xffffffffffffffff?, 0x0?})

/Users/dayachi/git/consul-enterprise/command/acl/policy/delete/policy_delete.go:62 +0x155

github.com/mitchellh/cli.(*CLI).Run(0xc000fa3400)

/Users/dayachi/go/pkg/mod/github.com/mitchellh/cli@v1.1.5/cli.go:262 +0x5b8

main.realMain()

/Users/dayachi/git/consul-enterprise/main.go:48 +0x469

main.main()

/Users/dayachi/git/consul-enterprise/main.go:18 +0x13

root@hashi-i-0cb3233c55d0fe848:/opt/consul/1.15.6+debug# consul version

Consul v1.15.6+ent

Revision ba04dc46b8+CHANGES

Build Date 2023-09-19T23:47:29Z

Protocol 2 spoken by default, understands 2 to 3 (agent will automatically use protocol >2 when speaking to compatible agents)

PR Checklist

• updated test coverage
• external facing docs updated
• appropriate backport labels added
• not a security concern

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Overview of commits

• e07f4da - eecf61b

[github-team-consul-core-pr-approver]

Auto approved Consul Bot automated PR