Made ZIpkin 2 default

[marcingrzejszczak]

• zipkin is zipkin-legacy
• zipkin2 is zipkin

fixes #785

[codecov-io]

Codecov Report

Merging #787 into master will decrease coverage by 0.02%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master     #787      +/-   ##
============================================
- Coverage     75.97%   75.95%   -0.03%     
  Complexity     1275     1275              
============================================
  Files           179      179              
  Lines          4658     4658              
  Branches        497      497              
============================================
- Hits           3539     3538       -1     
- Misses          835      836       +1     
  Partials        284      284

Impacted Files	Coverage Δ	Complexity Δ
...zipkin2/sender/ZipkinKafkaSenderConfiguration.java	82.35% <ø> (ø)	4 <0> (?)
.../sleuth/zipkin/DiscoveryClientEndpointLocator.java	73.91% <ø> (ø)	6 <0> (?)
...sleuth/zipkin/ServerPropertiesEndpointLocator.java	81.39% <ø> (ø)	16 <0> (?)
.../src/main/java/sample/SampleZipkinApplication.java	66.66% <ø> (ø)	4 <0> (?)
...mework/cloud/sleuth/zipkin/ZipkinSpanListener.java	91.74% <ø> (ø)	35 <0> (?)
...d/sleuth/zipkin2/sender/ZipkinSenderCondition.java	92.85% <ø> (ø)	4 <0> (?)
...ramework/cloud/sleuth/zipkin/ZipkinProperties.java	76.08% <ø> (ø)	9 <0> (?)
...k/cloud/sleuth/zipkin2/ReporterMetricsAdapter.java	100% <ø> (ø)	9 <0> (?)
...ework/cloud/sleuth/zipkin2/ZipkinSpanReporter.java	89.13% <ø> (ø)	33 <0> (?)
...d/sleuth/zipkin/FallbackHavingEndpointLocator.java	100% <ø> (ø)	5 <0> (?)
... and 20 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 2ecd77d...ca367c6. Read the comment docs.

[marcingrzejszczak]

We've changed the default in Sleuth so that the default zipkin starter is zipkin2. To use Zipkin1 you have to use zipkin-legacy module