Issue 256: Enable stream tag API on the RUST client.

[shrids]

Change log description

• Enable Stream Tag API on the RUST client.

Purpose of the change
Fixes #256

What the code does

• Update the Controller proto file with the latest version of the Controller.
• Enable Tag related APIs on the RUST client.
  The following APIs have been enabled.

    /**
     * API to fetch the Stream Configuration of a Stream.
     */
    async fn get_stream_configuration(&self, stream: &ScopedStream) -> ResultRetry<StreamConfiguration>;

    /**
     * API to fetch the Tags for a Stream.
     */
    async fn get_stream_tags(&self, stream: &ScopedStream) -> ResultRetry<Option<Vec<String>>>;

    /**
     * API to list streams associated with the given tag under a given scope and continuation token.
     * Use the pravega_controller_client::paginator::list_streams_for_tag to paginate over all the streams.
     */
    async fn list_streams_for_tag(
        &self,
        scope: &Scope,
        tag: &str,
        token: &CToken,
    ) -> ResultRetry<Option<(Vec<ScopedStream>, CToken)>>;

• Enable CLI option to create Stream with tags and list streams with a tag under a given scope.

osboxes@osboxes:~$ ./controller-cli list-streams-for-tag --help
controller-cli-list-streams-for-tag 0.2.0
List Streams for a tag, under a scope

USAGE:
    controller-cli list-streams-for-tag <scope-name> <tag>

FLAGS:
    -h, --help       Prints help information
    -V, --version    Prints version information

ARGS:
    <scope-name>    Scope Name
    <tag>           Tag Name

How to verify it
All the existing and newly added tests should pass.
Integration tests have been created to run against the latest version of Pravega.

[codecov-commenter]

Codecov Report

Merging #270 (4bc7ea6) into master (530b080) will increase coverage by 2.74%.
The diff coverage is 2.94%.

@@            Coverage Diff             @@
##           master     #270      +/-   ##
==========================================
+ Coverage   73.83%   76.58%   +2.74%     
==========================================
  Files          44       44              
  Lines       10450    11066     +616     
==========================================
+ Hits         7716     8475     +759     
+ Misses       2734     2591     -143     

Impacted Files	Coverage Δ
controller-client/src/mock_controller.rs	40.17% <0.00%> (-4.82%)	⬇️
controller-client/src/lib.rs	57.00% <0.59%> (+49.05%)	⬆️
controller-client/src/model_helper.rs	55.03% <5.88%> (+48.67%)	⬆️
shared/src/lib.rs	80.98% <100.00%> (+4.79%)	⬆️
src/segment/selector.rs	82.87% <100.00%> (+0.11%)	⬆️
src/util/mod.rs	96.96% <100.00%> (+0.09%)	⬆️
src/lib.rs	88.60% <0.00%> (ø)
src/segment/reader.rs	68.78% <0.00%> (ø)
retry/src/retry_result.rs	85.71% <0.00%> (+7.14%)	⬆️
... and 2 more

[shrids]

@tkaitchuck @Tristan1900 The Pravega PR for Stream tags has been merged. Could you review this changeset ?

[tkaitchuck]

This should probably be no_run. Or maybe this trick because we still want to know if it doesn't compile.

[shrids]

thanks, I have improved the snippet to enable compilation check.