Parse Dsn URL to handle user/password masking

[vicmarbev]

Description

Parse Dsn URL before trying to connect to be avoid printing user/password. When trying to connect via a malformed Dsn URL, the exporter logs something like this:
caller=collector.go:263 level=error errorpingingoracle:="parse \"oracle://user:password@\\oracleserver.com:1556/sdfef\": net/url: invalid control character in URL"
As this is treated as a generic error, the maskDsn function is not used.

Fixes # (issue)

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

A test has been added

Screenshots (if appropriate):

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• Updated version in Makefile respecting semver v2