Fixed issues 627 and 682.

[ygorelik]

Fixes #627, Fixes #682

[codecov]

Codecov Report

Merging #691 into master will increase coverage by 0.11%.
The diff coverage is 89.85%.

@@            Coverage Diff             @@
##           master     #691      +/-   ##
==========================================
+ Coverage   74.22%   74.33%   +0.11%     
==========================================
  Files         104      104              
  Lines       10470    10533      +63     
  Branches     1467     1471       +4     
==========================================
+ Hits         7771     7830      +59     
- Misses       2397     2399       +2     
- Partials      302      304       +2

Impacted Files	Coverage Δ
...k/python/core/ydk/path/sessions/netconf_session.py	69.23% <ø> (ø)	⬆️
sdk/python/core/tests/test_sanity_netconf.py	91.77% <100%> (+1.92%)	⬆️
sdk/python/core/tests/test_sanity_path.py	99.05% <100%> (+0.29%)	⬆️
sdk/python/core/ydk/services/netconf_service.py	68.96% <41.66%> (-3.19%)	⬇️
ydkgen/api_model.py	78.24% <0%> (+0.16%)	⬆️

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[ghost]

Looks good. Thanks, @ygorelik !