Fix security issues

[joekendal]

Violation Details -

    Description    :        Ensure S3 object is Encrypted
    File           :        main.tf
    Line           :        11
    Severity       :        MEDIUM
    -----------------------------------------------------------------------

    Description    :        Ensure S3 object is Encrypted
    File           :        main.tf
    Line           :        31
    Severity       :        MEDIUM
    -----------------------------------------------------------------------

    Description    :        Ensure that S3 Buckets have server side encryption at rest enabled with KMS key to protect sensitive data.                                                
    File           :        main.tf
    Line           :        1
    Severity       :        HIGH
    -----------------------------------------------------------------------

    Description    :        S3 bucket Access is allowed to all AWS Account Users.
    File           :        main.tf
    Line           :        1
    Severity       :        HIGH
    -----------------------------------------------------------------------

Scan Summary -

    File/Folder         :   /home/r00t/HealthcareLakeETL
    IaC Type            :   all
    Scanned At          :   2021-05-06 15:35:01.739965101 +0000 UTC
    Policies Validated  :   584
    Violated Policies   :   4
    Low                 :   0
    Medium              :   2
    High                :   2