API clean up #2

[tzaeschke]

Remove RequestPath class from public API

[codecov]

Codecov Report

Attention: Patch coverage is 43.33333% with 17 lines in your changes missing coverage. Please review.

Files	Coverage Δ	Complexity Δ
src/main/java/org/scion/jpan/Path.java	64.28% <ø> (ø)	6.00 <0.00> (ø)
src/main/java/org/scion/jpan/PathMetadata.java	47.14% <ø> (ø)	12.00 <0.00> (ø)
src/main/java/org/scion/jpan/ScionAddress.java	71.42% <ø> (-14.29%)	5.00 <0.00> (-2.00)
.../main/java/org/scion/jpan/ScionDatagramSocket.java	54.96% <ø> (ø)	57.00 <0.00> (ø)
src/main/java/org/scion/jpan/ScionUtil.java	95.34% <ø> (-1.21%)	29.00 <0.00> (-1.00)
src/main/java/org/scion/jpan/ScmpChannel.java	84.21% <ø> (ø)	18.00 <0.00> (ø)
src/main/java/org/scion/jpan/ResponsePath.java	78.57% <0.00%> (-6.05%)	6.00 <0.00> (ø)
src/main/java/org/scion/jpan/ScionService.java	67.75% <50.00%> (-3.08%)	49.00 <2.00> (-3.00)
...n/java/org/scion/jpan/AbstractDatagramChannel.java	82.98% <55.55%> (-1.27%)	74.00 <1.00> (ø)
...main/java/org/scion/jpan/ScionDatagramChannel.java	81.25% <50.00%> (-1.48%)	24.00 <1.00> (ø)
... and 1 more