[PR #416/97318559 backport][stable-1] Fix ci python requirements (#418)

* :Fix ci python requirements (#416)

* Add matrix for python and ansible-core versions for sanity tests

* Add python 3.9 to integrations tests

* Add python 3.9 to unit tests

* Reformat sort by python version first

(cherry picked from commit 97318559e5)

* Fix string to int comparison error 1292

* Fix assert expected changed value

* Cut assertion that is incorrect

With both connectors, and only in stable-1 apparently, the test is
always failed.

* Fix bool comparison

* Revert separated tests for both connectors

* Refactor test using connector.name variable

* Refactor filtering of tasks using connector's vars sets during setup

* Fix "command not found" and "database doesn't exists"

* Fix assertion by not running on failing connectors

* Fix missing package when using sha256_password with MySQL 8

tests/integration/targets/test_mysql_variables/tasks/mysql_variables.yml

@@ -151,22 +151,20 @@
     # ============================================================
     # Verify mysql_variable fails when setting an incorrect value (out of range)
     #
-    - shell: pip show pymysql | awk '/Version/ {print $2}'
-      register: pymysql_version
 
     - name: set mysql variable value to a number out of range
       mysql_variables:
         <<: *mysql_params
         variable: max_connect_errors
-        value: -1
+        value: '-1'
       register: oor_result
       ignore_errors: true
 
     - include: assert_var.yml changed=true output={{ oor_result }} var_name=max_connect_errors var_value=1
-      when: pymysql_version.stdout == ""
+      when: connector.name.0 is not search('pymysql')
 
     - include: assert_fail_msg.yml output={{ oor_result }}  msg='Truncated incorrect'
-      when: pymysql_version.stdout != ""
+      when: connector.name.0 is search('pymysql')
 
     # ============================================================
     # Verify mysql_variable fails when setting an incorrect value (incorrect type)