Update Trove dockerfiles for formatting

Change-Id: Ia3fef63d4aae1a342f376cd9653a2fe4a820aa7e
Partial-Bug:#1569417

docker/trove/trove-api/Dockerfile.j2

@@ -4,7 +4,8 @@ MAINTAINER {{ maintainer }}
 {% if install_type == 'binary' %}
     {% if base_distro in ['centos', 'fedora', 'oraclelinux', 'rhel'] %}
 
-RUN yum install -y openstack-trove-api \
+RUN yum -y install \
+        openstack-trove-api \
     && yum clean all
 
     {% elif base_distro in ['ubuntu'] %}

docker/trove/trove-conductor/Dockerfile.j2

@@ -4,7 +4,8 @@ MAINTAINER {{ maintainer }}
 {% if install_type == 'binary' %}
     {% if base_distro in ['centos', 'fedora', 'oraclelinux', 'rhel'] %}
 
-RUN yum install -y openstack-trove-conductor \
+RUN yum -y install \
+        openstack-trove-conductor \
   && yum clean all
 
     {% elif base_distro in ['ubuntu'] %}

docker/trove/trove-guestagent/Dockerfile.j2

@@ -4,7 +4,8 @@ MAINTAINER {{ maintainer }}
 {% if install_type == 'binary' %}
     {% if base_distro in ['centos', 'fedora', 'oraclelinux', 'rhel'] %}
 
-RUN yum install -y openstack-trove-guestagent \
+RUN yum -y install \
+        openstack-trove-guestagent \
   && yum clean all
 
     {% elif base_distro in ['ubuntu'] %}

docker/trove/trove-taskmanager/Dockerfile.j2

@@ -4,7 +4,8 @@ MAINTAINER {{ maintainer }}
 {% if install_type == 'binary' %}
     {% if base_distro in ['centos', 'fedora', 'oraclelinux', 'rhel'] %}
 
-RUN yum install -y openstack-trove-taskmanager \
+RUN yum -y install \
+        openstack-trove-taskmanager \
   && yum clean all
 
     {% elif base_distro in ['ubuntu'] %}