only add Authorization header if token exists

[reimer-atb]

This patch makes the database config "token" optional. Users can either set it to an empty string or omit the token completely. This is useful for DB-APIs that do not require authentication, and therefore no token.

Also closes #7

It is necessary to pin the werkzeug dependency to version 2.0.*. Otherwise, service-discovery will fail to start with:

ImportError: cannot import name 'parse_rule' from 'werkzeug.routing'

See python-restx/flask-restx#460

service-discovery probably should update its dependencies as soon as there is an updated version of flask-restx available.

[dberrocal-git]

There is still no update available to fix the bug with werkzeug, therefore LGTM.

[reimer-atb]

@dabm-git The changes from this PR seem to be included in #9 too? Can this PR still be merged or has it been superseeded by #9?

Do we require additional approval from @zaalizadeh / @Zakieh2020 ?

[Zakieh2020]

@dabm-git The changes from this PR seem to be included in #9 too? Can this PR still be merged or has it been superseeded by #9?

Do we require additional approval from @zaalizadeh / @Zakieh2020 ?

Regarding the second question,
@dabm-git has implemented this module and, his approval will be the main approve for this repository

[reimer-atb]

Regarding the second question, @dabm-git has implemented this module and, his approval will be the main approve for this repository

Ok. Since we already have @dabm-git 's approval I suggest to merge this so that we get a working version of service-discovery - and update / handle #9 subsequently.

@deanone @schlotze if you agree, could you do the merge?

[schlotze]

@deanone @schlotze if you agree, could you do the merge?

Yes, will do