TxEventQinOracleDB: Add Confirm DB password validation

[pasimoes]

To improve the UX it is recommended add "Confirm DB password validation" in Lab Setup.

[pasimoes]

Code modified .. some evidence from the test.

Database passwords must be 12 to 30 characters and contain at least one uppercase letter,
one lowercase letter, and one number. The password cannot contain the double quote (")
character or the word "admin".

Please enter a password: ***********
Retype a password: ***********
You have entered different passwords. Please, try again..

Please enter a password: ***********
Retype a password: ***********
You have entered different passwords. Please, try again..

Please enter a password: ***********
Retype a password: ***********

DB_PASSWORD completed
LAB_DB_PASSWORD_SET completed```