test: pull podman-plugins from internal RHEL repo

Instead of taking podman-plugins from the source directory, use the one
that will be released into RHEL 8.3.1.

This will simplify moving tests into an rpm.

schutzbot/vendor/87-podman-bridge.conflist

@@ -1,41 +0,0 @@
-{
-  "cniVersion": "0.4.0",
-  "name": "podman",
-  "plugins": [
-    {
-      "type": "bridge",
-      "bridge": "cni-podman0",
-      "isGateway": true,
-      "ipMasq": true,
-      "hairpinMode": true,
-      "ipam": {
-        "type": "host-local",
-        "routes": [{ "dst": "0.0.0.0/0" }],
-        "ranges": [
-          [
-            {
-              "subnet": "10.88.0.0/16",
-              "gateway": "10.88.0.1"
-            }
-          ]
-        ]
-      }
-    },
-    {
-      "type": "portmap",
-      "capabilities": {
-        "portMappings": true
-      }
-    },
-    {
-      "type": "firewall"
-    },
-    {
-      "type": "tuning"
-    },
-    {
-      "domainName": "dns.podman",
-      "type": "dnsname"
-    }
-  ]
-}

schutzbot/vendor/README.md

@@ -1,9 +0,0 @@
-This directory includes 3rd party modules, needed in CI.
-
- - [`dnsname`](https://github.com/containers/dnsname) plugin for podman,
-   needed to translate host names of containers into IPs. It is shipped
-   in Fedora, but missing in RHEL 8, see
-   [rhgbz#1877865](https://bugzilla.redhat.com/show_bug.cgi?id=1877865).
-   The `87-podman-bridge.conflist` file contains the corresponding config,
-   where the `{"domainName": "dns.podman", "type": "dnsname"}` bit is the
-   newly added part.

test/integration.sh

@@ -25,10 +25,19 @@ sudo dnf -y install \
     koji-osbuild-cli \
     podman
 
+# HACK: podman-plugins was only recently added to RHEL. Fetch it from the
+# internal RHEL 8.3.1 repository until that is released.
 greenprint "Install the podman dnsname plugin"
 if [[ $ID == rhel ]]; then
-  sudo cp schutzbot/vendor/87-podman-bridge.conflist /etc/cni/net.d/
-  sudo cp schutzbot/vendor/dnsname /usr/libexec/cni/
+  sudo tee /etc/yum.repos.d/rhel-8-3-1.repo << EOF
+[rhel-8-3-1]
+name = RHEL 8.3.1 override
+baseurl = http://download.devel.redhat.com/rhel-8/nightly/RHEL-8/RHEL-8.3.1-20201118.n.0/compose/AppStream/x86_64/os
+enabled = 0
+gpgcheck = 1
+EOF
+
+  sudo dnf -y install '--disablerepo=*' --enablerepo=rhel-8-3-1 podman-plugins
 else
   sudo dnf -y install podman-plugins
 fi