Merge pull request #12904 from nik9000/remove_ES_CLEAN_BEFORE_TEST

Remove ES_CLEAN_BEFORE_TEST

TESTING.asciidoc

@@ -473,11 +473,9 @@ and in another window:
 ----------------------------------------------------
 vagrant up centos-7 && vagrant ssh centos-7
 cd $RPM
-sudo ES_CLEAN_BEFORE_TEST=true bats $BATS/*rpm*.bats
+sudo bats $BATS/*rpm*.bats
 ----------------------------------------------------
 
-At this point `ES_CLEAN_BEFORE_TEST=true` is required or tests fail spuriously.
-
 If you wanted to retest all the release artifacts on a single VM you could:
 -------------------------------------------------
 # Build all the distributions fresh but skip recompiling elasticsearch:
@@ -486,7 +484,7 @@ mvn -amd -pl distribution install -DskipTests
 mvn -Dtests.vagrant -pl qa/vagrant pre-integration-test
 vagrant up trusty && vagrant ssh trusty
 cd $TESTROOT
-sudo ES_CLEAN_BEFORE_TEST=true bats $BATS/*.bats
+sudo bats $BATS/*.bats
 -------------------------------------------------
 
 == Coverage analysis

qa/vagrant/pom.xml

@@ -18,7 +18,7 @@
     <!-- The documentation for how to run this is in ../../Vagrantfile -->
     <properties>
       <testScripts>*.bats</testScripts>
-      <testCommand>sudo ES_CLEAN_BEFORE_TEST=true bats $BATS/${testScripts}</testCommand>
+      <testCommand>sudo bats $BATS/${testScripts}</testCommand>
 
       <allDebBoxes>precise, trusty, vivid, wheezy, jessie</allDebBoxes>
       <allRpmBoxes>centos-6, centos-7, fedora-22, oel-7</allRpmBoxes>

qa/vagrant/src/test/resources/packaging/scripts/packaging_test_utils.bash

@@ -305,7 +305,6 @@ clean_before_test() {
                             "/usr/lib/tmpfiles.d/elasticsearch.conf" \
                             "/usr/lib/sysctl.d/elasticsearch.conf")
 
-    if [ "$ES_CLEAN_BEFORE_TEST" = "true" ]; then
     # Kills all processes of user elasticsearch
     if id elasticsearch > /dev/null 2>&1; then
         pkill -u elasticsearch 2>/dev/null || true
@@ -343,15 +342,6 @@ clean_before_test() {
             rm -rf "$d"
         fi
     done
-    fi
-
-    # Checks that all files are deleted
-    for d in "${ELASTICSEARCH_TEST_FILES[@]}"; do
-        if [ -e "$d" ]; then
-            echo "$d should not exist before running the tests" >&2
-            exit 1
-        fi
-    done
 }
 
 start_elasticsearch_service() {