Set fixed versions of packages in setup.py

• all versions are set in setup.py
• removed requirements-tests.txt

requirements-test.txt

-pip
-setuptools
-wheel
-future==0.18.2
-ecdsa==0.16.1
-requests==2.27.1
-websocket-client==0.58.0
-pytz==2021.1
-pycryptodomex==3.10.1
-scrypt==0.8.18
-cryptography==3.4.7
-ruamel.yaml
-mock==4.0.3
-appdirs==1.4.4
-Click==7.1.2
-click_shell>=2.0
-prettytable
-pycodestyle==2.7.0
-pyflakes==2.3.1
-pylibscrypt==2.0.0
-six==1.15.0
-pytest
-pytest-mock
-pytest-cov
-coverage
-parameterized
-tox
-codacy-coverage
-virtualenv
-diff_match_patch
-asn1crypto