bitbake: prserv: add bitbake selftests

Run them with "bitbake-selftest prserv.tests"

(Bitbake rev: 34287fbf3d6be813aa5b767f540e4662f0d8d18d)

Signed-off-by: Michael Opdenacker <michael.opdenacker@bootlin.com>
Cc: Joshua Watt <JPEWhacker@gmail.com>
Cc: Tim Orling <ticotimo@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/bin/bitbake-selftest

@@ -15,6 +15,7 @@ import unittest
 try:
     import bb
     import hashserv
+    import prserv
     import layerindexlib
 except RuntimeError as exc:
     sys.exit(str(exc))
@@ -33,6 +34,7 @@ tests = ["bb.tests.codeparser",
          "bb.tests.utils",
          "bb.tests.compression",
          "hashserv.tests",
+         "prserv.tests",
          "layerindexlib.tests.layerindexobj",
          "layerindexlib.tests.restapi",
          "layerindexlib.tests.cooker"]