Update build to publish to maven local

Updates build script to publish zip to local maven. This allows plugins
like neural search to pick up the zip as a dependency.

Fixes bug in build script where group was being set to org.opensearch as
opposed to org.opensearch.plugin.

Signed-off-by: John Mazanec <jmazane@amazon.com>

build.gradle

@@ -53,7 +53,7 @@ ext {
 
 allprojects {
 
-    group = 'org.opensearch'
+    group = 'org.opensearch.plugin'
     version = opensearch_version.tokenize('-')[0] + '.0'
     if (version_qualifier) {
         version += "-${version_qualifier}"

scripts/build.sh

@@ -101,6 +101,7 @@ make opensearchknn_faiss opensearchknn_nmslib
 cd $work_dir
 ./gradlew assemble --no-daemon --refresh-dependencies -DskipTests=true -Dopensearch.version=$VERSION -Dbuild.snapshot=$SNAPSHOT -Dbuild.version_qualifier=$QUALIFIER
 ./gradlew publishPluginZipPublicationToZipStagingRepository -Dopensearch.version=$VERSION -Dbuild.snapshot=$SNAPSHOT -Dbuild.version_qualifier=$QUALIFIER
+./gradlew :publishToMavenLocal -Dbuild.snapshot=$SNAPSHOT -Dbuild.version_qualifier=$QUALIFIER
 
 # Add lib to zip
 zipPath=$(find "$(pwd)" -path \*build/distributions/*.zip)