Fix deployment when using Ansible 2.6.5

Due to a change of lower MySQL module from MySQLdb to
pymsql, Ansible calls to mysql_db and mysql_user
modules fail. See https://askubuntu.com/questions/\
766334/cant-login-as-mysql-user-root-from-normal-\
user-account-in-ubuntu-16-04
link for more information.

Change-Id: Iceb04d5285aa4fa7b2cff371ab22b0a011369028

playbooks/roles/bifrost-ironic-install/tasks/bootstrap.yml

@@ -90,8 +90,14 @@
   when: lookup('env', 'mysql_pass') | length > 0
   no_log: true
 
+- name: Setting MySQL socket fact
+  set_fact:
+    mysql_socket_path: "/var/run/{% if ansible_distribution | lower is search('suse') %}mysql/mysql.sock{% else %}mysqld/mysqld.sock{% endif %}"
+  when: ansible_version.full is version_compare('2.6.5', '>=')
+
 - name: "MySQL - Creating DB"
   mysql_db:
+    login_unix_socket: "{{ mysql_socket_path | default(omit) }}"
     name: "{{ ironic.database.name }}"
     state: present
     encoding: utf8
@@ -102,6 +108,7 @@
 
 - name: "MySQL - Creating user for Ironic"
   mysql_user:
+    login_unix_socket: "{{ mysql_socket_path | default(omit) }}"
     name: "{{ ironic.database.username }}"
     password: "{{ ironic.database.password }}"
     priv: "{{ ironic.database.name }}.*:ALL"

playbooks/roles/bifrost-ironic-install/tasks/inspector_bootstrap.yml

@@ -13,8 +13,14 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 ---
+- name: Setting MySQL socket fact
+  set_fact:
+    mysql_socket_path: "/var/run/{% if ansible_distribution | lower is search('suse') %}mysql/mysql.sock{% else %}mysqld/mysqld.sock{% endif %}"
+  when: ansible_version.full is version_compare('2.6.5', '>=')
+
 - name: "MySQL - Create database"
   mysql_db:
+    login_unix_socket: "{{ mysql_socket_path | default(omit) }}"
     login_user: "{{ mysql_username }}"
     login_password: "{{ mysql_password }}"
     name: "{{ ironic_inspector.database.name }}"
@@ -24,6 +30,7 @@
 
 - name: "MySQL - Create user for inspector"
   mysql_user:
+    login_unix_socket: "{{ mysql_socket_path | default(omit) }}"
     login_user: "{{ mysql_username }}"
     login_password: "{{ mysql_password }}"
     name: "{{ ironic_inspector.database.username }}"

playbooks/roles/bifrost-keystone-install/tasks/bootstrap.yml

@@ -71,8 +71,14 @@
   when: lookup('env', 'mysql_pass') | length > 0
   no_log: true
 
+- name: Setting MySQL socket fact
+  set_fact:
+    mysql_socket_path: "/var/run/{% if ansible_distribution | lower is search('suse') %}mysql/mysql.sock{% else %}mysqld/mysqld.sock{% endif %}"
+  when: ansible_version.full is version_compare('2.6.5', '>=')
+
 - name: "MySQL - Creating DB"
   mysql_db:
+    login_unix_socket: "{{ mysql_socket_path | default(omit) }}"
     name: "{{ keystone.database.name }}"
     state: present
     encoding: utf8
@@ -83,6 +89,7 @@
 
 - name: "MySQL - Creating user for keystone"
   mysql_user:
+    login_unix_socket: "{{ mysql_socket_path | default(omit) }}"
     name: "{{ keystone.database.username }}"
     password: "{{ keystone.database.password }}"
     priv: "{{ keystone.database.name }}.*:ALL"