added check to validate password

[somyaup]

Description

Added check for password validation(Passwords must use at least three of the four available character types: lowercase letters, uppercase letters, numbers, and symbols.)

Fixes #644

Type of Change:

Delete irrelevant options.

• Code

Code/Quality Assurance Only

How Has This Been Tested?

Describe the tests you ran to verify your changes. Provide instructions or GIFs so we can reproduce. List any relevant details for your test.

Checklist:

Delete irrelevant options.

• My PR follows the style guidelines of this project
• I have performed a self-review of my own code or materials
• I have commented my code or provided relevant documentation, particularly in hard-to-understand areas

Code/Quality Assurance Only

• My changes generate no new warnings
• New and existing unit tests pass locally with my changes

[coveralls]

Coverage decreased (-0.4%) to 42.021% when pulling dbca0d4 on somyaup:validate_password into 39285b6 on systers:develop.