Issue 51054 - Revise ACI target syntax checking
    
    Bug Description:  The previous commit enforced a strict syntax that was previously
                      allowed.  This is causing regressions for customers and community
                      members.
    
    Fix Description:  Reject ACI's that use more than one equal sign between the target
                      keyword and the value, but do not enforce that the values are
                      quoted.  A flag was added that we can turn on strict syntax at a
                      later date, but for now we will continue allow values without quotes.
    
    relates: https://pagure.io/389-ds-base/issue/51054
    
    Reviewed by:  firstyear & spichugi(Thanks!!)