ISSUE_TEMPLATE: Updated with a note about sensitive information

[johlju]

Pull Request (PR) description

• Changes to SqlServerDsc
  • Updated ISSUE_TEMPLATE.md with a note about sensitive information (issue ISSUE_TEMPLATE: Add a note that sensitive information can be obfuscated  #1092).

This Pull Request (PR) fixes the following issues

Fixes #1092

Task list

• Added an entry under the Unreleased section in the CHANGELOG.md? Entry
  should say what was changed, and how that affects users (if applicable).
• Resource documentation added/updated in README.md?
• Resource parameter descriptions added/updated in README.md, schema.mof
  and comment-based help?
• Comment-based help added/updated?
• Localization strings added/updated in all localization files as appropriate?
• Examples appropriately added/updated?
• Unit tests added/updated?
  See DSC Resource Testing Guidelines.
• Integration tests added/updated (where possible)?
  See DSC Resource Testing Guidelines.
• New/changed code adheres to
  DSC Resource Style Guidelines
  and Best Practices?

---

This change is 

[codecov-io]

Codecov Report

Merging #1093 into dev will not change coverage.
The diff coverage is n/a.

@@         Coverage Diff          @@
##            dev   #1093   +/-   ##
====================================
  Coverage    97%     97%           
====================================
  Files        32      32           
  Lines      3930    3930           
====================================
  Hits       3844    3844           
  Misses       86      86

[johlju]

---

Reviewed 2 of 2 files at r1.
Review status: all files reviewed at latest revision, all discussions resolved.

---

Comments from Reviewable