add support for client unary interceptors in pepclient

[drewwells]

No description provided.

[codecov]

Codecov Report

Merging #247 into master will increase coverage by 0.01%.
The diff coverage is 43.75%.

@@            Coverage Diff             @@
##           master     #247      +/-   ##
==========================================
+ Coverage   73.79%   73.81%   +0.01%     
==========================================
  Files         164      164              
  Lines       15503    15511       +8     
==========================================
+ Hits        11440    11449       +9     
+ Misses       3238     3237       -1     
  Partials      825      825              

Impacted Files	Coverage Δ
pep/unary_client.go	72.07% <30.76%> (+0.37%)	⬆️
pep/client.go	100.00% <100.00%> (ø)
pep/streaming_connection.go	82.89% <0.00%> (+0.65%)	⬆️

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[drewwells]

This passes tests, why is Travis not building the PR?

PASS
coverage: 89.7% of statements
ok      github.com/infobloxopen/themis/contrib/coredns/policy   4.338s