test: add logging around testDeployNodeApp* tests

[kzys]

These tests were sometimes really slow (TestDeployNodeApp/With_Depot took more than seven minutes in the run below).

Logging the app name would be helpful for troubleshooting.

https://github.com/superfly/flyctl/actions/runs/10895447430/job/30233905656?pr=3944#step:7:48

Change Summary

What and Why:

How:

Related to:

---

Documentation

• Fresh Produce
• In superfly/docs, or asked for help from docs team
• n/a

[kzys]

We'll get the output like this.

=== NAME  TestDeployNodeApp/With_Wireguard
    fly_volume_test.go:24: 03:17:24 workdir /tmp/TestDeployNodeAppWith_Wireguard25[43](https://github.com/superfly/flyctl/actions/runs/10895811904/job/30238115692?pr=3945#step:7:44)575208/001
=== NAME  TestDeployNodeApp/Without_Wireguard
    fly_volume_test.go:24: 03:17:24 workdir /tmp/TestDeployNodeAppWithout_Wireguard385309648/001
=== NAME  TestDeployNodeApp/With_Depot
    fly_volume_test.go:24: 03:17:25 workdir /tmp/TestDeployNodeAppWith_Depot631511855/001
=== NAME  TestDeployNodeApp/With_Wireguard
    fly_volume_test.go:24: 03:17:25 deploy preflight-pf-gha-70bc8dba-2024-09-mq2a2fqz
=== NAME  TestDeployNodeApp/With_Depot
    fly_volume_test.go:24: 03:17:25 deploy preflight-pf-gha-70bc8dba-2024-09-dvj3qsyz with Depot
=== NAME  TestDeployNodeApp/Without_Wireguard
    fly_volume_test.go:24: 03:17:25 deploy preflight-pf-gha-70bc8dba-2024-09-3skb7byz without WireGuard
=== NAME  TestDeployNodeApp/With_Depot
    fly_volume_test.go:24: 03:18:24 deploy preflight-pf-gha-70bc8dba-2024-09-dvj3qsyz again with Depot
=== NAME  TestDeployNodeApp/With_Wireguard
    fly_volume_test.go:24: 03:18:24 deploy preflight-pf-gha-70bc8dba-2024-09-mq2a2fqz again
--- PASS: TestDeployNodeApp (0.00s)
    --- PASS: TestDeployNodeApp/With_Depot (131.61s)
    --- PASS: TestDeployNodeApp/Without_Wireguard (171.[49](https://github.com/superfly/flyctl/actions/runs/10895811904/job/30238115692?pr=3945#step:7:50)s)
    --- PASS: TestDeployNodeApp/With_Wireguard (216.14s)

[dangra]

nice!