Improve cicd test runner and reported

- run pytest code without capturing stderr, to get solid output
  in the Jenkins log
- do not print the error message if something failed,
  it is already shown in the exception message
- add re-tries while getting the job results. Jenkins may return
  'None' for the job workflow right after the job is finished.
- add getting k8s version to utils/env_k8s
- add reporting k8s_conformance suite to TestRail
- increase number of cmp nodes to 4 on k8s cicd envs
- increase memory on k8s cmp nodes from 2Gb to 4Gb
- increase memory on k8s ctl nodes from 2Gb to 8Gb
- enable verbose in k8s_conformance tests

Change-Id: I672279007fe4d7e3d684f0e49d1bcb7ff42a430f
diff --git a/jobs/pipelines/swarm-run-pytest.groovy b/jobs/pipelines/swarm-run-pytest.groovy
index 553b8a2..5d7bd8d 100644
--- a/jobs/pipelines/swarm-run-pytest.groovy
+++ b/jobs/pipelines/swarm-run-pytest.groovy
@@ -36,9 +36,16 @@
     dir("${PARENT_WORKSPACE}") {
         try {
 
+            if (env.TCP_QA_REFS) {
+                stage("Update working dir to patch ${TCP_QA_REFS}") {
+                    shared.update_working_dir()
+                }
+            }
+
             stage("Run tests") {
                 def steps = shared.get_steps_list(PASSED_STEPS)
                 def sources = """\
+                    cd ${PARENT_WORKSPACE}
                     export ENV_NAME=${ENV_NAME}
                     . ./tcp_tests/utils/env_salt"""
                 if (steps.contains('k8s')) {
@@ -52,7 +59,7 @@
                 def installed = steps.collect {"""\
                     export ${it}_installed=true"""}.join("\n")
 
-                shared.run_cmd(sources + installed + """
+                shared.run_sh(sources + installed + """
                     export TESTS_CONFIGS=${ENV_NAME}_salt_deployed.ini
                     export MANAGER=devops  # use 'hardware' fixture to manage fuel-devops environment
                     export salt_master_host=\$SALT_MASTER_IP  # skip salt_deployed fixture
@@ -68,7 +75,7 @@
             }
 
         } catch (e) {
-            common.printMsg("Job is failed" + e.message, "red")
+            common.printMsg("Job is failed", "red")
             throw e
         } finally {
             // TODO(ddmitriev): analyze the "def currentResult = currentBuild.result ?: 'SUCCESS'"