HDDS-2187. ozone-mr test fails with No FileSystem for scheme "o3fs"

Closes #1537

hadoop-ozone/dist/src/main/compose/ozonesecure-mr/docker-config

@@ -62,7 +62,6 @@ HADOOP-POLICY.XML_org.apache.hadoop.yarn.server.api.ResourceTracker.acl=*
 HDFS-SITE.XML_rpc.metrics.quantile.enable=true
 HDFS-SITE.XML_rpc.metrics.percentiles.intervals=60,300
 
-CORE-SITE.xml_fs.o3fs.impl=org.apache.hadoop.fs.ozone.OzoneFileSystem
 CORE-SITE.xml_fs.AbstractFileSystem.o3fs.impl=org.apache.hadoop.fs.ozone.OzFs
 CORE-SITE.xml_fs.defaultFS=o3fs://bucket1.vol1/
 
@@ -175,4 +174,4 @@ KERBEROS_SERVER=kdc
 JAVA_HOME=/usr/lib/jvm/jre
 JSVC_HOME=/usr/bin
 SLEEP_SECONDS=5
-KERBEROS_ENABLED=true
+KERBEROS_ENABLED=true

hadoop-ozone/tools/src/main/resources/META-INF/services/org.apache.hadoop.fs.FileSystem

@@ -0,0 +1,16 @@
+# Licensed to the Apache Software Foundation (ASF) under one or more
+# contributor license agreements.  See the NOTICE file distributed with
+# this work for additional information regarding copyright ownership.
+# The ASF licenses this file to You under the Apache License, Version 2.0
+# (the "License"); you may not use this file except in compliance with
+# the License.  You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+org.apache.hadoop.fs.ozone.OzoneFileSystem