Normalize credentials log messages text and log level

[ggarnier]

Change all "Found credentials" log messages level to debug, and also normalize similar messages to the same pattern.

This fixes #1841

[codecov-commenter]

Codecov Report

Merging #2172 into develop will not change coverage. The diff coverage is 100.00%.

@@           Coverage Diff            @@
##           develop    #2172   +/-   ##
========================================
  Coverage    98.21%   98.21%           
========================================
  Files           58       58           
  Lines        10806    10806           
========================================
  Hits         10613    10613           
  Misses         193      193           

Impacted Files	Coverage Δ
botocore/credentials.py	98.64% <100.00%> (ø)

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[mvpatel2000]

Would love to have this merged in since I'm also affected by this. @kdaily since you are assigned to the issue, would you mind reviewing this and merging if it is good?

[lancerinf]

Thanks, this would be lovely! I was looking to do the same myself, then I started reading the CONTRIBUTING.rst and at the step "Check to see if there's an existing issue/pull request for the bug/feature.", I've found it :grin:

[RyanFitzSimmonsAK]

Hi @ggarnier, thanks for this PR and for your patience on hearing back. After discussing this with the team, this is not something we're prioritizing currently, and we'll be closing the PR. Please let me know if you have any follow-up questions.

[ggarnier]

@RyanFitzSimmonsAK I don't understand why you'd have to discuss prioritizing this. It's a very simple, no-breaking change.

[lancerinf]

Hi @ggarnier, thanks for this PR and for your patience on hearing back. After discussing this with the team, this is not something we're prioritizing currently, and we'll be closing the PR. Please let me know if you have any follow-up questions.

This is a bug that the community is interested in fixing for you, please reconsider "prioritizing" it.

[mvpatel2000]

Hi @ggarnier, thanks for this PR and for your patience on hearing back. After discussing this with the team, this is not something we're prioritizing currently, and we'll be closing the PR. Please let me know if you have any follow-up questions.

The PR is already done, so I am not sure what needs to be prioritized. It is a very annoying bug, and it would be very valuable if someone approved the PR. It's 5 lines and can be reviewed in 30 seconds.