test(RHINENG-14633): Parallel integration tests (#873)

Author: akhil-jha

deploy/testing-integration.yaml

@@ -147,7 +147,9 @@ parameters:
 - name: IQE_TEST_IMPORTANCE
   value: ''
 - name: IQE_PARALLEL_ENABLED
-  value: "false"
+  value: "true"
+- name: IQE_PARALLEL_WORKER_COUNT
+  value: "3"
 - name: IQE_SEL_IMAGE
   value: 'quay.io/redhatqe/selenium-standalone:ff_91.9.1esr_chrome_103.0.5060.114'
 - name: IQE_BROWSERLOG