Drop Release label in favor of OSBS release_bump plugin.

OSBS can automatically bump the release number, for that
we just need to drop the label from the Dockerfile

See https://pagure.io/ContainerSIG/container-sig/issue/1

Signed-off-by: Clement Verna <cverna@tutanota.com>

Dockerfile

@@ -1,4 +1,4 @@
-FROM fedora:27
+FROM registry.fedoraproject.org/f29/s2i-core:latest
 
 LABEL MAINTAINER "Honza Horak" <hhorak@redhat.com>
 
@@ -21,11 +21,10 @@ LABEL summary="MariaDB is a multi-user, multi-threaded SQL database server" \
       io.openshift.expose-services="3306:mysql" \
       io.openshift.tags="database,mysql,mariadb,mariadb101,galera"
 
-ENV NAME=mariadb VERSION=10.2 RELEASE=14 ARCH=x86_64
+ENV NAME=mariadb VERSION=10.2 ARCH=x86_64
 LABEL BZComponent="$NAME" \
         Name="$FGC/$NAME" \
         Version="$VERSION" \
-        Release="$RELEASE.$DISTTAG" \
         Architecture="$ARCH"
 
 EXPOSE 3306