copr-builder: enable nosync for ppc64le and ensure it is always latest nosync

roles/copr/backend/files/provision/files/mock/site-defaults.cfg

@@ -22,6 +22,4 @@ config_opts['plugin_conf']['tmpfs_opts']['mode'] = '0755'
 config_opts['plugin_conf']['tmpfs_opts']['keep_mounted'] = False
 
 config_opts['yum_command'] = '/usr/bin/yum-deprecated'
-{% if ansible_architecture == 'x86_64' %} # nosync does not currently work for epel-7-ppc64le chroot with errors /lib64/ld64.so.2: version `GLIBC_2.22' not found
 config_opts['nosync'] = True
-{% endif %}

roles/copr/backend/files/provision/provision_builder_tasks.yml

@@ -38,7 +38,6 @@
     - yum
     - scl-utils-build
     - ethtool
-    - nosync
     - expect
 
 - name: enable @copr/copr-dev in staging
@@ -55,6 +54,7 @@
     - dnf
     - copr-rpmbuild
     - rpkg
+    - nosync
 
 - name: put updated mock configs into /etc/mock
   template: src=files/mock/{{ item }} dest=/etc/mock