File descriptor limit is not adjusted in systemd

[Paulo Matias]

rabbitmq, memcached and galera roles need to be updated in order to make file descriptors limit to be adjusted correctly when using systemd:

/etc/ansible/roles/rabbitmq_server/templates/rabbitmq-server.j2:ulimit -n {{ rabbitmq_ulimit }}
/etc/ansible/roles/memcached_server/templates/memcached.debian.j2:ulimit -Hn {{ memcached_connections }}
/etc/ansible/roles/memcached_server/templates/memcached.debian.j2:ulimit -n {{ memcached_connections }}
/etc/ansible/roles/galera_server/templates/mysql_defaults.j2:ulimit -n {{ calculated_max_connections }}
/etc/ansible/roles/galera_server/templates/mysql_defaults.j2:ulimit -Hn {{ calculated_max_connections }}

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/369729

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/369745

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/369745
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible-memcached_server/commit/?id=04941492c38eb80826422980b16d5cabebd5cd3f
Submitter: Jenkins
Branch: master

commit 04941492c38eb80826422980b16d5cabebd5cd3f
Author: Paulo Matias <email address hidden>
Date: Tue Sep 13 19:52:13 2016 -0300

    Adjust file descriptor limit when systemd is used

    Change-Id: I29629ba3c78a55ebd63e4f9710ba71b85c488279
    Related-Bug: #1623164

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/369729
Committed: https://git.openstack.org/cgit/openstack/openstack-ansible-rabbitmq_server/commit/?id=716494ee8660737925cc625cee9e74d633b4d942
Submitter: Jenkins
Branch: master

commit 716494ee8660737925cc625cee9e74d633b4d942
Author: Paulo Matias <email address hidden>
Date: Tue Sep 13 19:14:28 2016 -0300

    Adjust file descriptor limit when systemd is used

    Change-Id: I1039463e860e613f56fb2b813078d2c134f6b65d
    Related-Bug: #1623164

[Paulo Matias (paulo-matias)]

Fix on Galera: https://review.openstack.org/#/c/371160/

Summing all up, this issue should now be fixed.