openj9-openjdk-jdk8 mirror script should mirror oracle "build level" not

head.

The mirror script currently detects a new Oracle build level and mirrors
it, but it mirrors the "head" rather than the actual "build level". The
changes in this script fix that problem and it reset the tag with latest
new tag from oracle.

More detail of the fix can be found in:
https://github.ibm.com/runtimes/openjdk-contribution/issues/217

Signed-off-by: Archana Nogriya <[email protected]>

Author: archana

scripts/update8.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 #
 # ===========================================================================
-# (c) Copyright IBM Corp. 2017 All Rights Reserved
+# (c) Copyright IBM Corp. 2018 All Rights Reserved
 # ===========================================================================
 #
 # This code is free software; you can redistribute it and/or modify it
@@ -24,7 +24,12 @@ set -euo pipefail
 echo "Common defs"
 
 # shellcheck disable=SC1091
-source import-common.sh
+modules=(corba langtools jaxp jaxws nashorn jdk)
+
+# These variables needs to define in Jenkin's job pipeline
+#WORKSPACE="<Define local workspace path where clone and merge is going to take place>"
+#GITHUB_IBM="<Path for extension git repo>"
+#J9REPOSITORY="<extention repo name, where merge will be pushed>" 
 
 rm -rf $WORKSPACE/openj9
 rm -rf $WORKSPACE/openjdk
@@ -57,10 +62,10 @@ git filter-branch -f --index-filter 'git rm -r -f -q --cached --ignore-unmatch .
 cd ..
 git pull jdk8u
 git fetch --tags jdk8u
-rm -rf jdk8u.git
-
 NEWTAG=$(git describe --abbrev=0 --tags)
 echo "Latest openjdk level is $NEWTAG"
+git reset --hard $NEWTAG
+rm -rf jdk8u.git
 
 if [ $NEWTAG != $OLDTAG ]
 then
@@ -85,6 +90,8 @@ then
       cd ..
       echo "GIT pull on $module"
       git pull $module
+      git fetch --tags $module
+      git reset --hard $NEWTAG
       rm -rf $module.git
       cd $WORKSPACE/openj9/$J9REPOSITORY 
       git fetch $WORKSPACE/openjdk/$module
@@ -102,5 +109,4 @@ then
 
 else
   echo "No new tag. No update done"
-fi
-
+fi