[HTTP/SSL] Revert docker-compose command changes from PR #125995 (#126399)

# Revert `docker-compose` command changes from #125995

> [!NOTE]
> This PR was AI/Copilot-generated.

Reverts the `docker-compose` → `docker compose` command changes
introduced in #125995, while keeping the Azure Linux 3 image pool swap
(`Build.Ubuntu.2204.Amd64.Open` → `build.azurelinux.3.amd64.open`).

## What is reverted

All `docker-compose` (hyphenated) → `docker compose` (space-separated)
changes across 5 files:

- `eng/pipelines/libraries/enterprise/linux.yml`
- `eng/pipelines/libraries/stress/http.yml`
- `eng/pipelines/libraries/stress/ssl.yml`
-
`src/libraries/Common/tests/System/Net/StressTests/run-docker-compose.ps1`
-
`src/libraries/Common/tests/System/Net/StressTests/run-docker-compose.sh`

## What is kept

The image pool migration in the 3 pipeline YAML files:
`Build.Ubuntu.2204.Amd64.Open` → `build.azurelinux.3.amd64.open`

Ref #125995, #125748, #125690

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: ManickaP

eng/pipelines/libraries/stress/http.yml

@@ -3,7 +3,8 @@ trigger: none
 pr:
   branches:
     include:
-    - "*"
+    - main
+    - release/*.0
   paths:
     include:
     - src/libraries/System.Net.Http/tests/StressTests/HttpStress/**
@@ -143,7 +144,7 @@ extends:
             $env:STRESS_CLIENT_ARGS = "$env:HTTPSTRESS_CLIENT_ARGS -http 3.0"
             $env:STRESS_SERVER_ARGS = "$env:HTTPSTRESS_SERVER_ARGS -http 3.0"
             New-Item -Force $env:DUMPS_SHARE -ItemType Directory
-            docker compose up --abort-on-container-exit --no-color
+            docker-compose up --abort-on-container-exit --no-color
           displayName: Run HttpStress - HTTP 3.0
           condition: and(eq(variables['buildRuntime.succeeded'], 'true'), eq(variables['buildStress.succeeded'], 'true'))
 
@@ -152,7 +153,7 @@ extends:
             $env:STRESS_CLIENT_ARGS = "$env:HTTPSTRESS_CLIENT_ARGS -http 2.0"
             $env:STRESS_SERVER_ARGS = "$env:HTTPSTRESS_SERVER_ARGS -http 2.0"
             New-Item -Force $env:DUMPS_SHARE -ItemType Directory
-            docker compose up --abort-on-container-exit --no-color
+            docker-compose up --abort-on-container-exit --no-color
           displayName: Run HttpStress - HTTP 2.0
           condition: and(eq(variables['buildRuntime.succeeded'], 'true'), eq(variables['buildStress.succeeded'], 'true'))
 
@@ -161,7 +162,7 @@ extends:
             $env:STRESS_CLIENT_ARGS = "$env:HTTPSTRESS_CLIENT_ARGS -http 1.1"
             $env:STRESS_SERVER_ARGS = "$env:HTTPSTRESS_SERVER_ARGS -http 1.1"
             New-Item -Force $env:DUMPS_SHARE -ItemType Directory
-            docker compose up --abort-on-container-exit --no-color
+            docker-compose up --abort-on-container-exit --no-color
           displayName: Run HttpStress - HTTP 1.1
           condition: and(eq(variables['buildRuntime.succeeded'], 'true'), eq(variables['buildStress.succeeded'], 'true'))
 

eng/pipelines/libraries/stress/ssl.yml

@@ -3,7 +3,8 @@ trigger: none
 pr:
   branches:
     include:
-    - "*"
+    - main
+    - release/*.0
   paths:
     include:
     - src/libraries/System.Net.Security/tests/StressTests/SslStress/**
@@ -101,7 +102,7 @@ extends:
             $env:STRESS_CLIENT_ARGS = $env:SSLSTRESS_CLIENT_ARGS
             $env:STRESS_SERVER_ARGS = $env:SSLSTRESS_SERVER_ARGS
             New-Item -Force $env:DUMPS_SHARE -ItemType Directory
-            docker compose up --abort-on-container-exit --no-color
+            docker-compose up --abort-on-container-exit --no-color
           displayName: Run SslStress
 
         - publish: $(Build.ArtifactStagingDirectory)/dumps

src/libraries/Common/tests/System/Net/StressTests/run-docker-compose.ps1

@@ -1,5 +1,5 @@
 #!/usr/bin/env pwsh
-# Runs the stress test using docker compose
+# Runs the stress test using docker-compose
 
 [CmdletBinding(PositionalBinding = $false)]
 Param(
@@ -50,7 +50,7 @@ if ($useWindowsContainers) {
 }
 
 if (!$noBuild) {
-    # Dockerize the stress app using docker compose
+    # Dockerize the stress app using docker-compose
     $BuildArgs = @(
         "--build-arg", "VERSION=$Version",
         "--build-arg", "CONFIGURATION=$configuration"
@@ -61,10 +61,10 @@ if (!$noBuild) {
     $originalErrorPreference = $ErrorActionPreference
     $ErrorActionPreference = 'Continue'
     try {
-        write-output "docker compose --file $COMPOSE_FILE build $buildArgs"
-        docker compose --file $COMPOSE_FILE build @buildArgs 2>&1
+        write-output "docker-compose --file $COMPOSE_FILE build $buildArgs"
+        docker-compose --file $COMPOSE_FILE build @buildArgs 2>&1
         if ($LASTEXITCODE -ne 0) {
-            throw "docker compose exited with error code $LASTEXITCODE"
+            throw "docker-compose exited with error code $LASTEXITCODE"
         }
     }
     finally {
@@ -86,5 +86,5 @@ if (!$buildOnly) {
 
     $env:STRESS_CLIENT_ARGS = $clientStressArgs
     $env:STRESS_SERVER_ARGS = $serverStressArgs
-    docker compose --file "$COMPOSE_FILE" up --abort-on-container-exit
+    docker-compose --file "$COMPOSE_FILE" up --abort-on-container-exit
 }