Add random seed for each wf-job run

   Inject hidden random parameter (is not showed in jjb) to be sure we are triggering unique downstream job.
   Most actual case - parallel run for same jobs( same params, but expected to have different result(aka, generate uniq repo url, based on build_id or etc)

PRODX-47114

Change-Id: I1b1fff2ce2a1d24c95294e16bae43a5cad7d10b8

Author: alexz-kh

src/com/mirantis/mk/Workflow.groovy

@@ -223,6 +223,9 @@ def generateParameters(job_parameters, global_variables) {
             _msg += "\n${param.key}: <${param.value.type}>\n${multistring_value}"
         }
     }
+    // Inject hidden random parameter (is not showed in jjb) to be sure we are triggering unique downstream job.
+    // Most actual case - parallel run for same jobs( but with different params)
+    parameters.addAll([string(name: 'RANDOM_SEED_STRING', value: "${env.JOB_NAME.toLowerCase()}-${env.BUILD_NUMBER}-${UUID.randomUUID().toString().split('-')[0]}")])
     common.infoMsg(_msg)
     return parameters
 }