All predeploy and postdeploy hooks triggered for single target deployment

[duizabojul]

[REQUIRED] Environment info

firebase-tools: 7.2.2

Platform: macOS, Windows, Ubuntu

[REQUIRED] Test case

.firebase.json example file

"hosting": [
{
    "target": "production",
    "public": "dist",
    "predeploy" : "echo 'production predeploy'",
    "postdeploy" : "echo 'production postdeploy'"
},
{
    "target": "staging",
    "public": "dist",
    "predeploy" : "echo 'staging predeploy'",
    "postdeploy" : "echo 'staging postdeploy'"
},
{
    "target": "development",
    "public": "dist",
    "predeploy" : "echo 'development predeploy'",
    "postdeploy" : "echo 'development postdeploy'"
}]

firebase deploy --only hosting:staging will produce following output :

production predeploy
staging predeploy
development predeploy
// STAGING DEPLOYMENT
production postdeploy
staging postdeploy
development postdeploy

[REQUIRED] Steps to reproduce

• In firebase project, create multiple hosting sites and create targets accordingly with CLI.

• Add predeploy and/or postdeploy hooks for each target in firebase.json file.

• Deploy on firebase with one target : firebase deploy --only hosting:your-target.

[REQUIRED] Expected behavior

Only target hooks have to be triggered.

[REQUIRED] Actual behavior

All targets predeploy and postdeploy hooks are triggered.

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[bkendall]

This is a duplicate of #1160 which I am reopening.