Status Check for Assert Less Than Equal - assert_le

[shahzebsiddiqui]

In #1313 we added support for assert greater equal assert_ge for status check. Let's add an operation assert_le that follows the same format. We can try the same test.

buildspecs:
  stream_test:
    type: script
    executor: generic.local.bash
    description: Run stream test with metrics example using assert greater equal
    env:
      OMP_NUM_THREADS: 4
    run: |
      wget https://raw.githubusercontent.com/jeffhammond/STREAM/master/stream.c
      gcc -openmp -o stream stream.c
      ./stream
    metrics:
      copy:
        type: float
        regex:
          exp: 'Copy:\s+(\S+)\s+.*'
          stream: stdout
          item: 1
      scale:
        type: float
        regex:
          exp: 'Scale:\s+(\S+)\s+.*'
          stream: stdout
          item: 1
      add:
        type: float
        regex:
          exp: 'Add:\s+(\S+)\s+.*'
          stream: stdout
          item: 1
      triad:
        type: float
        regex:
          exp: 'Triad:\s+(\S+)\s+.*'
          stream: stdout
          item: 1
    status:
      assert_le:
        - name: copy
          ref: 5000
        - name: scale
          ref: 5500
        - name: add
          ref: 6000
        - name: triad
          ref: 6500

Tasks:

• Add support for key assert_le in definitions.schema.json
• Add logic for assert_le in https://github.com/buildtesters/buildtest/blob/devel/buildtest/builders/base.py
• Add regression test in https://github.com/buildtesters/buildtest/blob/devel/tests/builders/test_builders.py with an example buildspec in same directory
• Add documentation