RPP Test Suite Upgrade 6 - Restructure common HIP/HOST code

[r-abishek]

@kiritigowda This is a minor PR that touches only test suite files to copy code from one place to another to restructure it better. It also has some reduced printing as requested in #282 + formatting / code cleanup.

• Move the common code in python scripts to a separate python script for reusability
• Fix the issue with repetitive decoding in case of performance tests
• Fix the tabbing issue in Tensor_hip.cpp
• caseMin and caseMax based changes in image cpp files
• Changes to run only necessary bitdepths in case of qaMode
• Changes in python test suite to skip augmentations/case numbers which are not supported

[r-abishek]

@kiritigowda SLES HIP tests passing on CI, but Ubuntu machine has an issue fetching rpp.

Cloning the remote Git repository
Cloning with configured refspecs honoured and without tags
Cloning repository https://github.com/ROCm/rpp.git
 > git init /var/jenkins_home/workspace/main_precheckin_rpp_PR-315/GO7vZ3kUj/rpp # timeout=10
Fetching upstream changes from https://github.com/ROCm/rpp.git
 > git --version # timeout=10
 > git --version # 'git version 2.25.1'
using GIT_ASKPASS to set credentials 
 > git fetch --no-tags --force --progress -- https://github.com/ROCm/rpp.git +refs/pull/315/head:refs/remotes/origin/PR-315 +refs/heads/develop:refs/remotes/origin/develop # timeout=10
ERROR: Error cloning remote repo 'origin'
hudson.plugins.git.GitException: Command "git fetch --no-tags --force --progress -- https://github.com/ROCm/rpp.git +refs/pull/315/head:refs/remotes/origin/PR-315 +refs/heads/develop:refs/remotes/origin/develop" returned status code 128: