rename env variable (#6956)
rename env variable (#6956)

* rename env variable LOG_LEVEL to E2E_LOG_LEVEL in order to be consistent with the rest of the apps

* revert part of the renaming
Alfresco/alfresco-ng2-components,Alfresco/alfresco-ng2-components,Alfresco/alfresco-ng2-components,Alfresco/alfresco-ng2-components