Log Conda not existing message as an information instead of an error

[DonJayamanne]

Fixes #1817
Fixes #1821

This pull request:

• Has a title summarizes what is changing
• Includes a news entry file (remember to thank yourself!)
• Has unit tests & code coverage is not adversely affected (within reason)
• Works on all actively maintained versions of Python (e.g. Python 2.7 & the latest Python 3 release)
• Works on Windows 10, macOS, and Linux (e.g. considered file system case-sensitivity)

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@51224e7). Click here to learn what that means.
The diff coverage is 63.63%.

@@            Coverage Diff            @@
##             master    #1820   +/-   ##
=========================================
  Coverage          ?   74.11%           
=========================================
  Files             ?      282           
  Lines             ?    13132           
  Branches          ?     2349           
=========================================
  Hits              ?     9733           
  Misses            ?     3266           
  Partials          ?      133

Impacted Files	Coverage Δ
src/client/common/types.ts	100% <ø> (ø)
src/client/common/logger.ts	42.1% <0%> (ø)
...ient/interpreter/locators/services/condaService.ts	97.39% <100%> (ø)
...gger/configProviders/configurationProviderUtils.ts	100% <100%> (ø)
...ent/interpreter/locators/services/pipEnvService.ts	84.61% <100%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 51224e7...72549cd. Read the comment docs.