URL encode query strings in art:promote

[maalund]

Closes #210

[CLAassistant]

All committers have signed the CLA.

[memsharded]

This looks good, thanks very much for your contribution @maalund

I think it might be worth to add a test to cover this case, something like:

@pytest.mark.requires_credentials
def test_art_promote_build_version():
    conanfile = textwrap.dedent("""
        from conan import ConanFile

        class Pkg(ConanFile):
            name = "mypkg"
            version = "1.0+build"
        """)
    save("./conanfile.py", conanfile)

    run("conan create .")
    run("conan upload mypkg/1.0+build -c -r extensions-stg")

    art_url = os.getenv("ART_URL")
    art_user = os.getenv("CONAN_LOGIN_USERNAME_EXTENSIONS_PROD")
    art_password = os.getenv("CONAN_PASSWORD_EXTENSIONS_PROD")
    run(f"conan art:promote pkglist.json --from=extensions-stg --to=extensions-prod --url={art_url} --user={art_user} --password={art_password}")

    out = run("conan list mypkg/1.0+build:*#* -r=extensions-prod -f=json", stderr=None)
    remote_prod_list_json_out = json.loads(out)
    # check it

    # necessary to do 2 promotes to see the error??
    out = run("conan list mypkg/1.0+build:*#* -r=extensions-prod -f=json", stderr=None)
    remote_prod_list_json_out = json.loads(out)
    # check it again

would be good (I haven't tested it)

[AbrilRBS]

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[maalund]

Test added and author amended.

[memsharded]

Merged, many thanks again!