test: fix junit reporter filename

[aramase]

Signed-off-by: Anish Ramasekar anish.ramasekar@gmail.com

Reason for Change:

Failed to create JUnit report file: /mnt/vss/_work/1/s/test/e2e
	open /mnt/vss/_work/1/s/test/e2e: is a directory
Failed to generate JUnit report data:
	invalid argument

• Adds a filename for the junit report to be used by the reporter.
  • It fails now because JUNIT_OUTPUT_FILEPATH is a directory

Requirements

• squashed commits
• included documentation
• added unit tests and e2e tests (if applicable).

Issue Fixed:

Does this change contain code from or inspired by another project?

• Yes
• No

If "Yes," did you notify that project's maintainers and provide attribution?

Special Notes for Reviewers:

[codecov-commenter]

Codecov Report

Merging #918 (dda93f3) into master (654b5c5) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #918   +/-   ##
=======================================
  Coverage   61.39%   61.39%           
=======================================
  Files           8        8           
  Lines         904      904           
=======================================
  Hits          555      555           
  Misses        314      314           
  Partials       35       35