added progress indication

[MeirShpilraien]

We will be able to see the current test number out of the total tests:

103/165) common:test_func
	Running: /home/meir/work/RedisGears/pytest/test_basics.py testTimeEvent
	[PASS]
104/165) common:test_func
	Running: /home/meir/work/RedisGears/pytest/test_basics.py testTimeEventSubinterpreterIsolation
	[PASS]
105/165) common:test_func
	Running: /home/meir/work/RedisGears/pytest/test_basics.py testTimeEventSurrviveRestart
	[PASS]

[codecov-commenter]

Codecov Report

Merging #134 (bec8643) into master (44dcbcd) will decrease coverage by 0.03%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #134      +/-   ##
==========================================
- Coverage   37.57%   37.53%   -0.04%     
==========================================
  Files          17       17              
  Lines        2092     2094       +2     
==========================================
  Hits          786      786              
- Misses       1306     1308       +2     

Flag	Coverage Δ
unittests	37.53% <0.00%> (-0.04%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
RLTest/__main__.py	0.00% <0.00%> (ø)

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