Add build script to scripts folder

[DarshitChanpura]

Security is missing build.sh under scripts folder which is preventing it from getting published to maven.

[DarshitChanpura]

@prudhvigodithi Can you please review this PR? Also, a couple of questions:

How do we test this?
How do we make sure that we didn't break something in future?

[prudhvigodithi]

Hey @DarshitChanpura you can leverage the existing build flow.
For this PR I have executed
./build.sh manifests/2.1.0/opensearch-2.1.0.yml --snapshot --component security

With manifest entry as

  - name: security
    repository: https://github.com/DarshitChanpura/security.git
    ref: zip-build-script

Log shows the build script being called from security/scripts/build.sh

Executing "bash /tmp/tmpnmgagmmy/security/scripts/build.sh -v 2.1.0 -p linux -a x64 -s true -o builds" in /tmp/tmpnmgagmmy/security
+ getopts :h:v:q:s:o:p:a: arg

Inside Output folder I can see the zips.

ls -ltr tar/builds/opensearch/maven/org/opensearch/plugin/opensearch-security/2.1.0.0-SNAPSHOT/
total 40332
-rw-rw-r-- 1 opensearch opensearch       32 Jun 28 20:36 opensearch-security-2.1.0.0-20220628.203623-1.zip.md5
-rw-rw-r-- 1 opensearch opensearch       32 Jun 28 20:36 opensearch-security-2.1.0.0-20220628.203623-1.pom.md5
-rw-rw-r-- 1 opensearch opensearch      128 Jun 28 20:36 maven-metadata.xml.sha512
-rw-rw-r-- 1 opensearch opensearch       64 Jun 28 20:36 maven-metadata.xml.sha256
-rw-rw-r-- 1 opensearch opensearch       40 Jun 28 20:36 maven-metadata.xml.sha1
-rw-rw-r-- 1 opensearch opensearch      128 Jun 28 20:36 opensearch-security-2.1.0.0-20220628.203623-1.zip.sha512
-rw-rw-r-- 1 opensearch opensearch       64 Jun 28 20:36 opensearch-security-2.1.0.0-20220628.203623-1.zip.sha256
-rw-rw-r-- 1 opensearch opensearch      128 Jun 28 20:36 opensearch-security-2.1.0.0-20220628.203623-1.pom.sha512
-rw-rw-r-- 1 opensearch opensearch       64 Jun 28 20:36 opensearch-security-2.1.0.0-20220628.203623-1.pom.sha256
-rw-rw-r-- 1 opensearch opensearch       40 Jun 28 20:36 opensearch-security-2.1.0.0-20220628.203623-1.pom.sha1
-rw-rw-r-- 1 opensearch opensearch     1039 Jun 28 20:36 opensearch-security-2.1.0.0-20220628.203623-1.pom
-rw-rw-r-- 1 opensearch opensearch       40 Jun 28 20:36 opensearch-security-2.1.0.0-20220628.203623-1.zip.sha1
-rw-rw-r-- 1 opensearch opensearch 41240949 Jun 28 20:36 opensearch-security-2.1.0.0-20220628.203623-1.zip
-rw-rw-r-- 1 opensearch opensearch       32 Jun 28 20:36 maven-metadata.xml.md5
-rw-rw-r-- 1 opensearch opensearch      796 Jun 28 20:36 maven-metadata.xml

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