Space check

[magnuhho]

By default conda-mirror will continue pulling files until it either succeeds or dies from some sort of error. This change aborts downloads with a logger.error when a threshold is reached.

[magnuhho]

Whoops. Didn't see the work done and the comments to #64.

[parente]

@magnuhho Thanks for the series of PRs. I need to get travis working again properly for the repo (it changed orgs) and will give them a look-see.

[magnuhho]

added changes to

• use command line argument instead of constant
• make the space check windows compatible
• check both temp and target folders
• take already downloaded packages into account when checking free space in target folder

[codecov-io]

Codecov Report

Merging #70 into master will decrease coverage by 1.19%. The diff coverage is 64.28%.

@@           Coverage Diff            @@
##           master     #70     +/-   ##
========================================
- Coverage   93.89%   92.7%   -1.2%     
========================================
  Files           2       2             
  Lines         262     274     +12     
========================================
+ Hits          246     254      +8     
- Misses         16      20      +4

Impacted Files	Coverage Δ
conda_mirror/conda_mirror.py	92.61% <64.28%> (-1.21%)	:arrow_down:

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[parente]

Thanks for working through this @magnuhho. It looks reasonable now. We'll probably want to add a test for it in the future, but let's get this merged for now. 🎉