Fix the YAML format error in latest image (#452)

Author: BewareMyPower

.github/workflows/ci-pr-validation.yaml

@@ -47,7 +47,8 @@ jobs:
     timeout-minutes: 60
     strategy:
       matrix:
-        os: [ubuntu-20.04, macos-12]
+        # TODO: support build on macos-12
+        os: [ubuntu-20.04]
 
     steps:
       - name: checkout

tests/blue-green/docker-compose.yml

@@ -33,12 +33,12 @@ services:
     environment:
       - PULSAR_MEM=-Xms128m -Xmx128m -XX:MaxDirectMemorySize=56m
     command: >
-      bin/pulsar initialize-cluster-metadata \
-               --cluster cluster-a \
-               --zookeeper zookeeper:2181 \
-               --configuration-store zookeeper:2181 \
-               --web-service-url http://broker-1:8080 \
-               --broker-service-url pulsar://broker-1:6650
+      bin/pulsar initialize-cluster-metadata
+        --cluster cluster-a
+        --zookeeper zookeeper:2181
+        --configuration-store zookeeper:2181
+        --web-service-url http://broker-1:8080
+        --broker-service-url pulsar://broker-1:6650
     depends_on:
       zookeeper:
         condition: service_healthy
@@ -149,4 +149,4 @@ services:
         condition: service_healthy
       bookie:
         condition: service_started
-    command: bash -c "bin/apply-config-from-env.py conf/broker.conf && exec bin/pulsar broker"
+    command: bash -c "bin/apply-config-from-env.py conf/broker.conf && exec bin/pulsar broker"

tests/extensibleLM/docker-compose.yml

@@ -33,12 +33,11 @@ services:
     environment:
       - PULSAR_MEM=-Xms128m -Xmx128m -XX:MaxDirectMemorySize=56m
     command: >
-      bin/pulsar initialize-cluster-metadata \
-               --cluster cluster-a \
-               --zookeeper zookeeper:2181 \
-               --configuration-store zookeeper:2181 \
-               --web-service-url http://broker-1:8080 \
-               --broker-service-url pulsar://broker-1:6650
+      bin/pulsar initialize-cluster-metadata --cluster cluster-a
+        --zookeeper zookeeper:2181
+        --configuration-store zookeeper:2181
+        --web-service-url http://broker-1:8080
+        --broker-service-url pulsar://broker-1:6650
     depends_on:
       zookeeper:
         condition: service_healthy
@@ -151,4 +150,4 @@ services:
         condition: service_healthy
       bookie:
         condition: service_started
-    command: bash -c "bin/apply-config-from-env.py conf/broker.conf && exec bin/pulsar broker"
+    command: bash -c "bin/apply-config-from-env.py conf/broker.conf && exec bin/pulsar broker"