Embed pymysql within the collection and use default test container

This change eliminates the need to install the connector on each
controlled node, as `pymysql` version 1.1.1 is now included. As a
result, we can safely assume its availability, thus simplifying the
testing process.

Also, I managed to remove the need for pre-built test containers. We
now use the default test containers from ansible-test.

tests/integration/targets/test_mysql_query/tasks/issue-28.yml

@@ -48,19 +48,9 @@
         login_port: '{{ mysql_primary_port }}'
         ca_cert: /tmp/cert.pem
       register: result
-      ignore_errors: yes
-
-    - assert:
-        that:
-          - result is failed
-      when:
-        - connector_name == 'pymysql'
-
-    - assert:
-        that:
-          - result is succeeded
-      when:
-        - connector_name != 'pymysql'
+      ignore_errors: true
+      failed_when:
+        - result is success
 
     - name: attempt connection with newly created user ignoring hostname
       mysql_query:
@@ -70,13 +60,8 @@
         login_host: '{{ mysql_host }}'
         login_port: '{{ mysql_primary_port }}'
         ca_cert: /tmp/cert.pem
-        check_hostname: no
+        check_hostname: false
       register: result
-      ignore_errors: yes
-
-    - assert:
-        that:
-          - result is succeeded or 'pymysql >= 0.7.11 is required' in result.msg
 
     - name: Drop mysql user
       mysql_user:

tests/integration/targets/test_mysql_query/tasks/mysql_query_initial.yml

@@ -360,30 +360,14 @@
     register: result
 
   # Issue https://github.com/ansible-collections/community.mysql/issues/268
-  - name: Assert that create table IF NOT EXISTS is not changed with pymysql
+  # Though, the best thing would be to debug this and invert the condition...
+  - name: Assert that create table IF NOT EXISTS is changed
     assert:
       that:
-        # PyMySQL driver throws a warning for version before 0.10.0
-        - result is not changed
-    when:
-      - connector_name == 'pymysql'
-      - connector_version is version('0.10.0', '<')
-
-  # Issue https://github.com/ansible-collections/community.mysql/issues/268
-  - name: Assert that create table IF NOT EXISTS is changed with mysqlclient
-    assert:
-      that:
-        # Mysqlclient 2.0.1 and pymysql 0.10.0+ drivers throws no warning,
+        # pymysql 0.10.0+ drivers throws no warning,
         # so it's impossible to figure out if the state was changed or not.
         # We assume that it was for DDL queries by default in the code
         - result is changed
-    when:
-      - >
-        connector_name == 'mysqlclient'
-        or (
-          connector_name == 'pymysql'
-          and connector_version is version('0.10.0', '>')
-        )
 
   - name: Drop db {{ test_db }}
     mysql_query: