bitbake: prserv: use double quotes by default

To aligh with the hashserv code

(Bitbake rev: 7a6999750791659eaffe49aabfbfba9f37f51913)

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-prserv

@@ -11,14 +11,14 @@ import optparse
 import warnings
 warnings.simplefilter("default")
 
-sys.path.insert(0, os.path.join(os.path.dirname(os.path.dirname(__file__)),'lib'))
+sys.path.insert(0, os.path.join(os.path.dirname(os.path.dirname(__file__)), "lib"))
 
 import prserv
 import prserv.serv
 
 __version__="1.0.0"
 
-PRHOST_DEFAULT='0.0.0.0'
+PRHOST_DEFAULT="0.0.0.0"
 PRPORT_DEFAULT=8585
 
 def main():