[YUNIKORN-2558]Remove redundent conditional to install tools

[SophieTech88]

What is this PR for?

The script skips the make tools if the tools folder is existent. That is a bit weird that we don't check all tools in the folder. The script should call make tools anyway, and let make tools do the check and install.
Action: remove the conditional of install_tools function in run-e2e-tests.sh file .

What type of PR is it?

• - Bug Fix
• - Improvement
• - Feature
• - Documentation
• - Hot Fix
• - Refactoring

Todos

• - Task

What is the Jira issue?

https://issues.apache.org/jira/browse/YUNIKORN-2558

How should this be tested?

Screenshots (if appropriate)

Questions:

• - The licenses files need update.
• - There is breaking changes for older versions.
• - It needs documentation.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 66.13%. Comparing base (7557508) to head (95af7bb).

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #819   +/-   ##
=======================================
  Coverage   66.13%   66.13%           
=======================================
  Files          69       69           
  Lines        7517     7517           
=======================================
  Hits         4971     4971           
  Misses       2334     2334           
  Partials      212      212           

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[chia7712]

unrelated error. will merge it