Merge branch '17-add-lftp-to-the-runner-base-image' into 'master'

Resolve "Add lftp to the runner base image"

Closes #17

See merge request common/dockerfiles!28

base/centos:7

@@ -2,7 +2,7 @@ FROM centos:7.4.1708
  MAINTAINER Tamas Gal <tgal@km3net.de>
 
  RUN yum install -y ant bison flex-devel gcc gcc-c++ gcc-gfortran gdb make cmake glibc-static strace && yum clean -y all
- RUN yum install -y autoconf perl-CPAN gettext-devel perl-devel openssl-devel libcurl-devel expat-devel wget && yum clean -y all
+ RUN yum install -y autoconf perl-CPAN gettext-devel perl-devel openssl-devel libcurl-devel expat-devel wget lftp && yum clean -y all
 
  RUN export VER="2.25.1" && \
      wget https://github.com/git/git/archive/v${VER}.tar.gz && \