[vegeta] Adding pip upgrade and missing dependencies

[chentex]

Signed-off-by: Vicente Zepeda Mas vzepedam@redhat.com

Description

Adding pip upgrade to Dockerfiles and missing dependencies due to build failures.

Fixes

[codecov-commenter]

Codecov Report

Merging #389 (1bdfaff) into master (92ca28a) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #389   +/-   ##
=======================================
  Coverage   39.35%   39.35%           
=======================================
  Files          15       15           
  Lines         869      869           
=======================================
  Hits          342      342           
  Misses        527      527           

Flag	Coverage Δ
gha	39.35% <ø> (ø)
python-3.6	39.35% <ø> (ø)
unit	39.35% <ø> (ø)

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[chentex]

/rerun all

[comet-perf-ci]

Results for SNAFU CI Test

Test	Result	Runtime
snafu/vegeta_wrapper	PASS	00:05:15

[dry923]

LGTM!