update cloudwatch alarm comparison operators

[kddejong]

Issue #, if available:
Fix #1153
Description of changes:

• Update CloudWatch alarm comparison operators from https://docs.aws.amazon.com/AmazonCloudWatch/latest/APIReference/API_MetricAlarm.html

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[codecov]

Codecov Report

Merging #1154 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1154   +/-   ##
=======================================
  Coverage   87.77%   87.77%           
=======================================
  Files         135      135           
  Lines        7997     7997           
  Branches     1966     1966           
=======================================
  Hits         7019     7019           
  Misses        580      580           
  Partials      398      398

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