RPM Support

We mirror CentOS repositories in our Pulp and we've hit the issue described in [1] with releases 7.2 and 7.4.
It affects all files in the LiveOS and images directories as follows (note the 7.2 and 7.4 symlink pointing to the same file):

:/var/lib/pulp] find ./published/yum/master/yum_distributor/centos-7* -iname vmlinuz -ls
11163912    4 lrwxrwxrwx   1 apache   apache        129 Sep 19 12:17 ./published/yum/master/yum_distributor/centos-72/1505816224.61/images/pxeboot/vmlinuz -> /var/lib/pulp/content/units/distribution/de/d64602f1a2165af46f6cd4c8c2645a0422607173fb34617458c9f419e2c7bf/images/pxeboot/vmlinuz
34740815    4 lrwxrwxrwx   1 apache   apache        129 Sep 19 13:16 ./published/yum/master/yum_distributor/centos-73/1505819770.72/images/pxeboot/vmlinuz -> /var/lib/pulp/content/units/distribution/8d/d927134b78ab15e3c803b686a6baf564c5ccb97154da48f9ead7041eb53188/images/pxeboot/vmlinuz
11021555    4 lrwxrwxrwx   1 apache   apache        129 Sep 19 08:39 ./published/yum/master/yum_distributor/centos-74/1505803143.84/images/pxeboot/vmlinuz -> /var/lib/pulp/content/units/distribution/de/d64602f1a2165af46f6cd4c8c2645a0422607173fb34617458c9f419e2c7bf/images/pxeboot/vmlinuz

Even when the repos are deleted and created again, pulp still thinks the 7.2 and 7.4 distribution files are the same. When downloaded manually form upstream we feed our pulp from [2, 3], the files indeed differ.

md5sum 72/vmlinuz 74/vmlinuz
418a1a0074554d7d7d63b514990c2d1f  72/vmlinuz
43a395b89485ec908e6c0622273299c4  74/vmlinuz

I use a workaround of removng the feed and sync schedule of 7.4 to have up-to-date 7.2 distribution files. This allows me to serve both 7.2 and 7.4 rpms, but I'm unable to mirror both 7.2 and 7.4 distribution files simultaneously

[1] https://www.redhat.com/archives/pulp-list/2016-January/msg00003.html
[2] http://vault.centos.org/centos/7.2.1511/os/x86_64/
[3] http://mirror.centos.org/centos/7.4.1708/os/x86_64/