Fix critical bug with patched Lock

[pfreixes]

@popravich it should be merged ASAP, sorry fo the bug introduced plus no detection in the UT. I will do another MR to have support for Python 3.6.2, using the Python implementation.

We detected that issue together with @argaen when the new Python RC was tested with aiocache.

We have been running our system with that version since it was published, we didn't notice any particular issue. I guess that having a pool overallocated of opened connections has hide that mistake.

[codecov]

Codecov Report

Merging #256 into master will decrease coverage by 9.87%.
The diff coverage is 100%.

@@            Coverage Diff            @@
##           master    #256      +/-   ##
=========================================
- Coverage   96.97%   87.1%   -9.88%     
=========================================
  Files          57      57              
  Lines        7449    7450       +1     
  Branches      587     587              
=========================================
- Hits         7224    6489     -735     
- Misses        168     872     +704     
- Partials       57      89      +32

Impacted Files	Coverage Δ
aioredis/locks.py	95.65% <100%> (-4.35%)	⬇️
tests/geo_commands_test.py	18.46% <0%> (-81.54%)	⬇️
tests/sentinel_commands_test.py	18.6% <0%> (-81.4%)	⬇️
aioredis/commands/geo.py	22.53% <0%> (-77.47%)	⬇️
tests/ssl_test.py	23.52% <0%> (-76.48%)	⬇️
tests/sentinel_failover_test.py	12.78% <0%> (-75.19%)	⬇️
aioredis/sentinel/commands.py	37.03% <0%> (-60.5%)	⬇️
aioredis/log.py	45.45% <0%> (-54.55%)	⬇️
tests/conftest.py	58.89% <0%> (-31.58%)	⬇️
aioredis/commands/generic.py	81.37% <0%> (-18.63%)	⬇️
... and 15 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 0f73783...5e671fe. Read the comment docs.

[codecov]

Codecov Report

Merging #256 into master will decrease coverage by 9.87%.
The diff coverage is 100%.

@@            Coverage Diff            @@
##           master    #256      +/-   ##
=========================================
- Coverage   96.97%   87.1%   -9.88%     
=========================================
  Files          57      57              
  Lines        7449    7450       +1     
  Branches      587     587              
=========================================
- Hits         7224    6489     -735     
- Misses        168     872     +704     
- Partials       57      89      +32

Impacted Files	Coverage Δ
aioredis/locks.py	95.65% <100%> (-4.35%)	⬇️
tests/geo_commands_test.py	18.46% <0%> (-81.54%)	⬇️
tests/sentinel_commands_test.py	18.6% <0%> (-81.4%)	⬇️
aioredis/commands/geo.py	22.53% <0%> (-77.47%)	⬇️
tests/ssl_test.py	23.52% <0%> (-76.48%)	⬇️
tests/sentinel_failover_test.py	12.78% <0%> (-75.19%)	⬇️
aioredis/sentinel/commands.py	37.03% <0%> (-60.5%)	⬇️
aioredis/log.py	45.45% <0%> (-54.55%)	⬇️
tests/conftest.py	58.89% <0%> (-31.58%)	⬇️
aioredis/commands/generic.py	81.37% <0%> (-18.63%)	⬇️
... and 15 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 0f73783...5e671fe. Read the comment docs.

[pfreixes]

A really weird error in Travis regarding some firs steps to get ready the environment ...

[popravich]

Can you resubmit the PR into v0.3 branch?

[pfreixes]

#257

[popravich]

Released v1.0.0b2 and v0.3.3