Migrate library modules to use parallel test feature

[Thevakumar-Luheerathan]

Description:

Ballerina test framework currently supports running test cases in parallel. We need to migrate library modules to use that feature.
Following docs contain basic information related to migration.
https://docs.google.com/document/d/1RX2K1-BVZSzaVKEbgVnNoJqQ3SzzXkfAqIH4ePCnLuw/edit?usp=sharing

Following sheet tracks the progress
https://docs.google.com/spreadsheets/d/1zINoTY9ubpiJA7JDNGKDQsheV15-lMC25-sYa74YYkQ/edit?usp=sharing

Following tasks needs to be carried out

• Fix failing tests cases.
• Make un-parallel tests to parallel.
• Evaluate the performance improvement.

Progress of library modules

• module-ballerina-io
• module-ballerina-jballerina.java.arrays
• module-ballerina-math.vector
• module-ballerina-time
• module-ballerina-url
• module-ballerina-xmldata
• module-ballerina-constraint
• module-ballerina-crypto
• module-ballerina-os
• module-ballerina-protobuf
• module-ballerina-random
• module-ballerina-task
• module-ballerina-xslt
• module-ballerina-cache
• module-ballerina-log
• module-ballerinax-persist.inmemory
• module-ballerina-uuid
• module-ballerina-auth
• module-ballerina-file
• module-ballerina-ftp
• module-ballerina-jwt
• module-ballerina-mime
• module-ballerina-mqtt
• module-ballerina-oauth2
• module-ballerina-tcp
• module-ballerina-udp
• module-ballerina-edi
• module-ballerina-email
• module-ballerina-http
• module-ballerina-toml
• module-ballerina-yaml
• module-ballerina-grpc
• module-ballerinai-transaction
• module-ballerina-websocket
• module-ballerina-websub
• module-ballerina-websubhub
• module-ballerina-graphql
• module-ballerina-soap
• module-ballerina-sql
• module-ballerina-c2c
• module-ballerinax-mssql
• module-ballerinax-mysql
• module-ballerinax-postgresql
• module-ballerinax-persist.sql