Unpin the libmodulemd RPMs

docker/Dockerfile-tests

@@ -4,7 +4,7 @@ WORKDIR /build
 RUN yum -y update
 RUN yum -y install epel-release yum-utils
 RUN yum-config-manager --add-repo https://kojipkgs.fedoraproject.org/repos-dist/epel7Server-infra/latest/x86_64/
-# Replace the pinned libmodulemd RPMs with python2-libmodulemd2 after https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2019-e093131fa7
+# Remove libmodulemd1 after the following ticket is resolved https://pagure.io/fedora-infrastructure/issue/8206
 RUN yum -y install \
     --nogpgcheck \
     --setopt=deltarpm=0 \
@@ -19,6 +19,7 @@ RUN yum -y install \
     git \
     kobo \
     kobo-rpmlib \
+    libmodulemd1 \
     python-backports-ssl_match_hostname \
     python-dnf \
     python-dogpile-cache \
@@ -30,8 +31,7 @@ RUN yum -y install \
     python-futures \
     python-koji \
     python-ldap3 \
-    https://kojipkgs.fedoraproject.org//packages/libmodulemd2/2.8.0/2.el7/x86_64/libmodulemd2-2.8.0-2.el7.x86_64.rpm \
-    https://kojipkgs.fedoraproject.org//packages/libmodulemd2/2.8.0/2.el7/x86_64/python2-libmodulemd2-2.8.0-2.el7.x86_64.rpm \
+    python2-libmodulemd2 \
     python-mock \
     python-munch \
     python-pip \

docker/Dockerfile-tests-py3

@@ -1,7 +1,6 @@
 FROM fedora:29
 
 WORKDIR /build
-# Replace the pinned libmodulemd RPMs with python3-libmodulemd after https://bodhi.fedoraproject.org/updates/FEDORA-2019-ccf39d5166
 RUN dnf -y install \
     --nogpgcheck \
     --setopt=deltarpm=0 \
@@ -21,8 +20,7 @@ RUN dnf -y install \
     python3-flask-sqlalchemy \
     python3-koji \
     python3-ldap3 \
-    https://kojipkgs.fedoraproject.org//packages/libmodulemd/2.8.0/1.fc29/x86_64/libmodulemd-2.8.0-1.fc29.x86_64.rpm \
-    https://kojipkgs.fedoraproject.org//packages/libmodulemd/2.8.0/1.fc29/x86_64/python3-libmodulemd-2.8.0-1.fc29.x86_64.rpm \
+    python3-libmodulemd \
     python3-munch \
     python3-pip \
     python3-prometheus_client \