Revert adding TEMPEST_VERSION
Change workflow for cvp-job. Oleksii Zhurba, Denis Meltsaykin and I desided that all custom settings in cvp jobs should be taked out from jenkins parameters. 
These custom values (e.g. version of tempest) will be indicated in bash script from 'cvp-configuration' repository. 

This reverts commit 164010b874cbbc128e23299a87dc7a8d6b730d2a.

Change-Id: Ie2fd6948847f6fbd701e750df49002e6220252c0
diff --git a/validate-cloud.groovy b/validate-cloud.groovy
index 503b375..7d3b2e2 100644
--- a/validate-cloud.groovy
+++ b/validate-cloud.groovy
@@ -49,7 +49,7 @@
 
 def pepperEnv = "pepperEnv"
 def artifacts_dir = 'validation_artifacts/'
-if (!env.JOB_TIMEOUT){
+if (env.JOB_TIMEOUT == ''){
     job_timeout = 12
 } else {
     job_timeout = env.JOB_TIMEOUT.toInteger()