[jaeger-client-java/apache instrumentation] Completely remove apache instrumentation dependence on jaeger-context

[dray92]

opentracing-0.31 Tracer interface completely removes the requirement for this module to depend on TracingUtils

[codecov]

Codecov Report

Merging #320 into master will decrease coverage by 0.1%.
The diff coverage is 66.66%.

@@             Coverage Diff              @@
##             master     #320      +/-   ##
============================================
- Coverage      83.9%   83.79%   -0.11%     
- Complexity      562      563       +1     
============================================
  Files            91       91              
  Lines          2218     2222       +4     
  Branches        256      257       +1     
============================================
+ Hits           1861     1862       +1     
- Misses          257      258       +1     
- Partials        100      102       +2

Impacted Files	Coverage Δ	Complexity Δ
...r/jaeger/httpclient/TracingRequestInterceptor.java	72.22% <60%> (-6.35%)	4 <0> (ø)
...ger/httpclient/SpanCreationRequestInterceptor.java	91.66% <75%> (+8.33%)	5 <1> (ø)	⬇️
...ain/java/com/uber/jaeger/senders/ThriftSender.java	73.46% <0%> (-4.09%)	10% <0%> (ø)
...jaeger/reporters/protocols/ThriftUdpTransport.java	81.35% <0%> (-3.39%)	14% <0%> (ø)
...java/com/uber/jaeger/reporters/RemoteReporter.java	87.14% <0%> (-2.86%)	9% <0%> (ø)
...ger-core/src/main/java/com/uber/jaeger/Tracer.java	86.46% <0%> (+0.43%)	19% <0%> (+1%)	⬆️
...er/httpclient/SpanInjectionRequestInterceptor.java	91.66% <0%> (+16.66%)	3% <0%> (ø)	⬇️

---

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 aa755d2...ece269a. Read the comment docs.

[debosmit]

Related to #188