add checks for mysql version, change alter user syntax if it's 8 or g…

[DCSTOLF]

add checks for mysql version, changes alter user syntax in case it's 8 or greater. fixes mysql parameter regex in schema.json.

Background

the current version of the plugin will break with mysql 8 or mariadb.

it also doesn't accept valid mysql parameter names and values.

Problem

• The alter user command used when creating a staging database or vdb is different on MySQL 8.
• Repository discovery breaks trying to parse mysqld --version and it's MariaDB
• The regex that validates mysql parameters is wrong for any mysql version.

Solution

• The MySQL version needs to be checked so the alter user command is built properly and the plugin doesn't break completely if it's version 8.

• The repository parsing needs to check for MySQL or MariaDB so it won't break if it's MariaDB.

• Fixing regex so it accepts dashes on property name and dashes or periods in property value.

Testing Done

Tested on my lab and at a customer who's trying delphix on mysql.

Notes to Reviewers

Customer is not entitled to select connector, but these are easy fixes that will benefit any customer.

[vinaybyrappa]

Closing this PR to fix secret scanning issue using BFG. Will reopen once done

[vinaybyrappa]

Reopening the PR as BFG tool activity is done