Display Credential Format Requirements on Installation Interactive Page

NetBrain currently documents username and password format limitations for database and Linux components only in reference documentation, which many users do not review in full before installation or upgrade. As a result, invalid credentials are frequently entered, leading to deployment and upgrade failures that require support intervention. This enhancement would surface the applicable username and password limitations directly on the interactive installation page, near the corresponding input fields, so users see the constraints at the point of entry. Making this information visible during setup would reduce avoidable deployment blockers and lower the support effort associated with resolving invalid credential issues.