In ansible-core 2.19, when clauses (when, failed_when, etc) do not
convert values to bool automatically, also, templating with "|bool" does
not work too, so an actual value comparison is required.

Signed-off-by: Rafael Guterres Jeffman <rjeffman@redhat.com>

In ansible-core, templates and expressions must use trusted sources,
such as playbooks or roles, and module results are considered untrusted
sources.

Signed-off-by: Rafael Guterres Jeffman <rjeffman@redhat.com>

As ansible-core 2.19 'upper' and 'lower' filters make lists into strings
and these strings are not interpreted as lists when running the plugins,
it is needed to use 'map(<filter>)' to apply the filter to all entries
of a list.

Signed-off-by: Rafael Guterres Jeffman <rjeffman@redhat.com>

In ansible-core 2.19 there's no automatic coercion from None or empty
strings to the boolean value "false", so we need to compare the result
of the filter 'regex_search' to 'None' and the empty string to evaluate
if any match occurred.

In fixing this issue, it was found that the tests were incorrectly
evaluating the results, and the comparisons were fixed.

Signed-off-by: Rafael Guterres Jeffman <rjeffman@redhat.com>

Prepare playbooks for ansible core 2.19 

ansible-core 2.19 is not automatically converting empty and non empty lists
to bool values. Conditionals must have a boolean result.

The solution is to evaluate the length of the lists instead.

test_backup.yml: Fix evaluation of 'list = False' and 'list = True'

ansible-core 2.19 is not automatically converting empty and non empty lists
to bool values. Conditionals must have a boolean result.

The solution is to evaluate the length of the lists instead.

test_backup.yml: Fix evaluation of 'list = False' and 'list = True' v2