Change repo files structure to accommodate multiple platforms

Dockerfile

@@ -7,7 +7,7 @@ FROM centos:7
 MAINTAINER Elvin Sindrilaru, esindril@cern.ch, CERN 2017
 
 # Add extra repositories
-ADD eos-docker/*.repo /etc/yum.repos.d/
+ADD eos-docker/el-7/*.repo /etc/yum.repos.d/
 
 # Add helper scripts
 ADD eos-docker/image_scripts/*.sh /

Dockerfile.local

@@ -7,7 +7,7 @@ FROM centos:7
 MAINTAINER Elvin Sindrilaru, esindril@cern.ch, CERN 2017
 
 # Add required repositories
-ADD *.repo /etc/yum.repos.d/
+ADD el-7/*.repo /etc/yum.repos.d/
 
 # Add helper scripts
 ADD image_scripts/*.sh /

Dockerfile_asan

@@ -7,7 +7,7 @@ FROM centos:7
 MAINTAINER Fabio Luchetti faluchet@cern.ch, CERN 2019
 
 # Add extra repositories
-ADD eos-docker/*.repo /etc/yum.repos.d/
+ADD eos-docker/el-7/*.repo /etc/yum.repos.d/
 
 # Add helper scripts
 ADD eos-docker/image_scripts/*.sh /

Dockerfile_coverage

@@ -7,7 +7,7 @@ FROM centos:7
 MAINTAINER Elvin Sindrilaru, esindril@cern.ch, CERN 2017
 
 # Add extra repositories
-ADD eos-docker/*.repo /etc/yum.repos.d/
+ADD eos-docker/el-7/*.repo /etc/yum.repos.d/
 
 # Add helper scripts
 ADD eos-docker/image_scripts/*.sh /

Dockerfile_xrd_testing

@@ -7,7 +7,7 @@ FROM centos:7
 MAINTAINER Elvin Sindrilaru, esindril@cern.ch, CERN 2017
 
 # Add extra repositories
-ADD eos-docker/*.repo /etc/yum.repos.d/
+ADD eos-docker/el-7/*.repo /etc/yum.repos.d/
 
 # Add helper scripts
 ADD eos-docker/image_scripts/*.sh /