chore: bdd tests should not use OAuth2 authentication to auth service

[ypukhta]

Issue trustbloc/auth#286

Note:
I had to change in KMS makefile golang-cross image tag from latest to 1.18 to workaround the following error:

Building kms cli binaries
go: downloading github.com/spf13/cobra v1.3.0
go: downloading github.com/trustbloc/edge-core v0.1.8
go: downloading github.com/spf13/pflag v1.0.5
go: downloading github.com/stretchr/testify v1.7.0
go: downloading github.com/davecgh/go-spew v1.1.1
go: downloading github.com/pmezard/go-difflib v1.0.0
go: downloading gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b
kms-cli-linux-amd64
kms-cli-linux-arm64
# runtime/cgo
cgo: C compiler "aarch64-apple-darwin20.2-clang" not found: exec: "aarch64-apple-darwin20.2-clang": executable file not found in $PATH
make: *** [Makefile:53: build-kms-cli-binaries] Error 2
Error: Process completed with exit code 2.

ghcr.io/gythialy/golang-cross:latest was updated a day ago and seems introduced this issue. Didn't dig deep, though.

Signed-off-by: Yevgen Pukhta [email protected]

[codecov]

Codecov Report

Base: 86.45% // Head: 86.45% // No change to project coverage 👍

Coverage data is based on head (ca4cc8a) compared to base (412f152).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #340   +/-   ##
=======================================
  Coverage   86.45%   86.45%           
=======================================
  Files          24       24           
  Lines        2119     2119           
=======================================
  Hits         1832     1832           
  Misses        182      182           
  Partials      105      105           

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