BUP-1041: Upgrade docker_Remote_plugin to 8.1.0

docs/build.gradle

 plugins {
-    id 'com.bmuschko.docker-remote-api' version '7.4.0'
+    id 'com.bmuschko.docker-remote-api' version "${docker_remote_plugin}"
 }
 
 import com.bmuschko.gradle.docker.tasks.image.*

gradle.properties

@@ -24,6 +24,7 @@ group=com.mgmtp.bup.ozg
 
 docker_compose_plugin=0.16.11
 gradle_node_plugin=7.0.0
+docker_remote_plugin=8.1.0
 
 dockerRegistryForPublish=bup-docker-local.dockerregistry.mgm-tp.com
 dockerRegistryForRead=dockerregistry.mgm-tp.com
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