Install python2-pip in the test VM and disable EPEL repo

so we don't use EPEL when actually building the images

Related: rhbz#1698366

test/vm.install

@@ -29,6 +29,27 @@ if ! rpm -q beakerlib; then
     fi
 fi
 
+EPEL_REPO="/etc/yum.repos.d/epel7.repo"
+if [ ! -f "$EPEL_REPO" ]; then
+    cat > $EPEL_REPO << __EOF__
+[epel7]
+name=epel7
+failovermethod=priority
+enabled=1
+skip_if_unavailable=0
+mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=epel-7&arch=\$basearch
+gpgcheck=0
+__EOF__
+fi
+
+# EPEL packages used in tests
+if ! rpm -q python2-pip; then
+    yum -y install python2-pip
+fi
+
+# don't build images with EPEL enabled
+rm -f $EPEL_REPO
+
 if rpm -q python2-cryptography; then
     yum remove -y python2-cryptography
 fi

tests/cli/test_build_and_deploy_openstack.sh

@@ -39,8 +39,12 @@ rlJournalStart
             rlLogInfo "OS_PASSWORD is configured"
         fi
 
-        rlRun -t -c "yum -y install python2-pip python-virtualenv"
+        if ! rlCheckRpm "python2-pip"; then
-        rlAssertRpm python2-pip
+            rlRun -t -c "yum -y install python2-pip"
+            rlAssertRpm python2-pip
+        fi
+
+        rlRun -t -c "yum -y install python-virtualenv"
         rlAssertRpm python-virtualenv
         rlRun -t -c "virtualenv $VENV"