Fixes #8512

Fixes #8394

Fixes #8425

Use mysql_variable to query, set and update variables.
Assert using user and password to query, set and update  variables.
Assert using single quotes, double quotes and no quotes  when using variables

Also adding an integration test for same.

Use mysql_user module to create, delete users.
Update user password and ensure new password was updated for the correct user.
Assert user has access to multiple databases
Assert user creation, deleting using different user privilege and ensure privilege work correctly.

Fixes #8315

Also adds a new unicode integration test

fix an issue that copying directory will fail when trying to change file attributes and the target file already exists on remote

- the issue was introduced by the commit 84759faa

Add a lot of tests to verify parsing routines for scenarios that should pass.  Some changes TBD, like stripping command spaces off end of expressions.

* Strip lookup calls out of inventory variables and clean unsafe data
  returned from lookup plugins (CVE-2014-4966)
* Make sure vars don't insert extra parameters into module args and prevent
  duplicate params from superseding previous params (CVE-2014-4967)

Adding the following Test Coverage for RedHat and Debian OS:

 - Use mysql_db module to create, delete databases using different encoding.
 - Backup/Restore databases using different file format: sql, gz and bz2.
 - Create and delete databases using different user privilege.
 - Assert database creation, deleting and content using system commands.

This reverts commit 7a8eb0b6.

Without this setting, the newline idempotence of scalar strings changes depending on whether
or not they contain any Jinja2 template blocks.

Add integration tests for fetch/slurp, make powershell fetch/slurp work as close as possible to existing fetch/slurp modules.