Build: Remove legacy migration script (#22834)

This migration script existed from moving plugins into the ES repo in
2.0. It is no longer needed (and contains eg maven commands), and if we
did need any part of it, it will still exist in git history.

migrate.sh

@@ -1,126 +0,0 @@
-#!/bin/bash
-set -e
-set -u
-set -o pipefail
-
-# This script creates a new branch then migrate all the maven stuff in it and commit that branch.
-# then it runs mvn install to check that everything is still running
-
-# Useful commands while testing
-# rm -rf migration/tmp plugins
-# git checkout pr/migration_script -f
-# git add .; git commit -m "Add migration script" --amend
-# ./migrate.sh 
-# mvn clean install -DskipTests
-
-GIT_BRANCH="refactoring/add_lang"
-
-# Insert a new text after a given line
-# insertLinesAfter text_to_find text_to_add newLine_separator filename
-# insertLinesAfter "<\/project>" "   <modules>=   <\/modules>" "§" "pom.xml"
-function insertLinesAfter() {
-	# echo "## modify $4 with $2"
-	sed "s/$1/$1$3$2/" $4 | tr "$3" "\n" > $4.new
-	mv $4.new $4
-}
-
-# Insert a new text before a given line
-# insertLinesBefore text_to_find text_to_add newLine_separator filename
-# insertLinesBefore "<\/project>" "   <modules>=   <\/modules>" "§" "pom.xml"
-function insertLinesBefore() {
-	# echo "## modify $4 with $2"
-	sed "s/$1/$2$3$1/" $4 | tr "$3" "\n" > $4.new
-	mv $4.new $4
-}
-
-# Replace text in a file
-# replaceLine old_text new_text filename
-# replaceLine "old" "new" "pom.xml"
-function replaceLine() {
-	# echo "## modify $3 with $2"
-	sed "s/^$1/$2/" $3 > $3.new
-	mv $3.new $3
-}
-
-# Remove lines in a file
-# removeLines from_text_included to_text_included filename
-# removeLines "old" "new" "pom.xml"
-function removeLines() {
-	# echo "## remove lines in $3 from $1 to $2"
-	sed "/$1/,/$2/d" $3 > $3.new
-	mv $3.new $3
-}
-
-# Migrate a plugin
-# migratePlugin short_name
-function migratePlugin() {
-	PLUGIN_GIT_REPO="https://github.com/elastic/elasticsearch-$1.git"
-	git remote add remote_$1 $PLUGIN_GIT_REPO
-	git fetch remote_$1 > /dev/null 2>/dev/null
-	echo "## Add $1 module from $PLUGIN_GIT_REPO"
-
-	# echo "### fetch $1 project from $PLUGIN_GIT_REPO in plugins"
-	# If you want to run that locally, uncomment this line and comment one below
-	#cp -R ../elasticsearch-$1/* plugins/$1
-	# git clone $PLUGIN_GIT_REPO plugins/$1 > /dev/null 2>/dev/null
-	git checkout -b migrate_$1 remote_$1/master > /dev/null 2>/dev/null
-	git remote rm remote_$1 > /dev/null 2>/dev/null
-	mkdir -p plugins/$1
-	git mv -k * plugins/$1 > /dev/null 2>/dev/null       
-	git rm .gitignore > /dev/null 2>/dev/null
-	# echo "### change $1 groupId to org.elasticsearch.plugin"
-	# Change the groupId to avoid conflicts with existing 2.0.0 versions.
-	replaceLine "    <groupId>org.elasticsearch<\/groupId>" "    <groupId>org.elasticsearch.plugin<\/groupId>" "plugins/$1/pom.xml"
-
-	# echo "### cleanup $1 pom.xml"
-	removeLines "<issueManagement>" "<\/issueManagement>" "plugins/$1/pom.xml"
-	removeLines "<repositories>" "<\/repositories>" "plugins/$1/pom.xml"
-	removeLines "<url>" "<\/scm>" "plugins/$1/pom.xml"
-
-        # echo "### remove version 5.0.0-SNAPSHOT from $1 pom.xml"
-        # All plugins for ES 5.0.0 uses 5.0.0-SNAPSHOT version number
-        replaceLine "    <version>5.0.0-SNAPSHOT<\/version>" "" "plugins/$1/pom.xml"
-
-	# echo "### remove unused dev-tools and .git dirs and LICENSE.txt and CONTRIBUTING.md files"
-	rm -r plugins/$1/dev-tools
-	rm -rf plugins/$1/.git
-	rm plugins/$1/LICENSE.txt
-	rm plugins/$1/CONTRIBUTING.md
-
-	# echo "### commit changes"
-	git add --all .
-	git commit -m "add $1 module" > /dev/null
-	git checkout $GIT_BRANCH
-	git merge -m "migrate branch for $1" migrate_$1 > /dev/null 2>/dev/null
-	# We can now add plugin module
-	insertLinesBefore "    <\/modules>" "        <module>$1<\/module>" "§" "plugins/pom.xml"
-	git add .
-	git commit -m "add $1 module" > /dev/null
-	git branch -D migrate_$1
-}
-
-echo "# STEP 0 : prepare the job"
-
-
-# echo "## create git $GIT_BRANCH work branch"
-
-# It first clean the existing branch if any
-echo "(You can safely ignore branch not found below)"
-git branch -D $GIT_BRANCH > /dev/null || :
-
-# Create the new branch
-git branch $GIT_BRANCH > /dev/null
-git checkout $GIT_BRANCH > /dev/null 2>/dev/null
-
-
-echo "# STEP 4 : Migrate plugins"
-
-# Analysis
-migratePlugin "lang-python" 
-migratePlugin "lang-javascript"
-
-
-echo "you can now run:"
-echo "mvn clean install -DskipTests"
-
-