Agent merges job and order variables case-insensitive

Current Situation

• We assume we have an order with a lowercase parameter key which contains an underline, e.g. a_b = "test"

  <order >
      <params >
          <param  name="a_b" value="test"/>
      </params>
      <run_time />
  </order>
  

• and two jobs which read the parameter where the first runs on the Master and the second on an Agent

  <job  order="yes" stop_on_error="no">
      <params >
          <param  name="A_B"       value="DefaultJobValue"/>
      </params>
      <script  language="shell">
          <![CDATA[
  @echo off
  echo param A_B:   %SCHEDULER_PARAM_A_B%
          ]]>
      </script>
      <run_time />
  </job>
  

• Both jobs have the same parameter in uppercase in the job configuration.
• On the master the parameter is substituted

  param A_B:   test
  

• On the Agent the parameter value from the job configuration is used

  param A_B:   DefaultJobValue
  

• It works properly if the parameter in the Agent's job is specified in lowercase or is undefined.
• It works properly if the parameter key does not contain an underline.

Desired Behavior

• The parameter should be passed to the Agent's job in the same manner as to the Master's job.
• Parameter keys should be case insensitive.