Downgrade lvm2, disable lvmetad and dmevent

Downgrade lvm2 to prevent hangs while using udev.

dmeventd was never designed to be executed inside
'container' so there are some assumption about being
there only single instance of running 'dmeventd' on
the whole host system.

Signed-off-by: Kotresh HR <khiremat@redhat.com>

extras/nightly-container/provision.yml

@@ -46,6 +46,42 @@
       args:
         warn: no
 
+    - name: Downgrade lvm2
+      yum:
+        name: "{{ item }}"
+        allow_downgrade: yes
+      with_items:
+        - device-mapper-libs-1.02.149-10.el7_6.2.x86_64
+        - device-mapper-1.02.149-10.el7_6.2.x86_64
+        - device-mapper-event-libs-1.02.149-10.el7_6.2.x86_64
+        - device-mapper-event-1.02.149-10.el7_6.2.x86_64
+        - lvm2-libs-2.02.180-10.el7_6.2.x86_64
+        - lvm2-2.02.180-10.el7_6.2.x86_64
+
+    - name: Clean yum cache
+      command: yum clean all
+      args:
+        warn: no
+
+    # Disable lvmetad in container
+    - name: Disable lvmetad services
+      command: systemctl mask {{ item }}
+      args:
+        warn: false
+      loop:
+        - lvm2-lvmetad.service
+        - lvm2-lvmetad.socket
+
+    # Prevent dmeventd from running in the container, it may cause
+    # conflicts with the service running on the host
+    - name: Disable dmeventd services
+      command: systemctl mask {{ item }}
+      args:
+        warn: false
+      loop:
+        - dmevent.service
+        - dmevent.socket
+
     - name: Configure lvm
       replace:
         path: /etc/lvm/lvm.conf
@@ -55,6 +91,8 @@
         - {option: "udev_rules", oldval: "1", newval: "0"}
         - {option: "udev_sync", oldval: "1", newval: "0"}
         - {option: "use_lvmetad", oldval: "1", newval: "0"}
+        - {option: "obtain_device_list_from_udev", oldval: "1", newval: "0"}
+        - {option: "monitoring", oldval: "1", newval: "0"}
 
     # Using shell here instead of find/file modules as this is much easier
     - name: Cleanup systemd targets