[BP] moved asserts to own class + add greater/lower_or_equals #279

[netzulo]

Obtained behaviour

Don't have _greater_or_equals + _lower_or_equals methods

Expected behaviour

• Move Asserts method to own class without config or test class dependency
• Have _greater_or_equals + _lower_or_equals methods

SPEC

• refactor TestInfoBase.assert_lower
• refactor TestInfoBase.assert_greater
• add TestInfoBase.assert_lower_or_equals
• add TestInfoBase.assert_greater_or_equals

Notes

Should exist tests to ensure this asserts