build(python): Make default config py3 compatible (#692)

sentry/sentry.conf.example.py

@@ -12,25 +12,25 @@ def get_internal_network():
     import socket
     import struct
 
-    iface = "eth0"
+    iface = b"eth0"
     sockfd = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
-    ifreq = struct.pack("16sH14s", iface, socket.AF_INET, b"\x00" * 14)
+    ifreq = struct.pack(b"16sH14s", iface, socket.AF_INET, b"\x00" * 14)
 
     try:
         ip = struct.unpack(
-            "!I", struct.unpack("16sH2x4s8x", fcntl.ioctl(sockfd, 0x8915, ifreq))[2]
+            b"!I", struct.unpack(b"16sH2x4s8x", fcntl.ioctl(sockfd, 0x8915, ifreq))[2]
         )[0]
         netmask = socket.ntohl(
-            struct.unpack("16sH2xI8x", fcntl.ioctl(sockfd, 0x891B, ifreq))[2]
+            struct.unpack(b"16sH2xI8x", fcntl.ioctl(sockfd, 0x891B, ifreq))[2]
         )
     except IOError:
         return ()
-    base = socket.inet_ntoa(struct.pack("!I", ip & netmask))
+    base = socket.inet_ntoa(struct.pack(b"!I", ip & netmask))
     netmask_bits = 32 - int(round(math.log(ctypes.c_uint32(~netmask).value + 1, 2), 1))
-    return ("{0:s}/{1:d}".format(base, netmask_bits),)
+    return "{0:s}/{1:d}".format(base, netmask_bits)
 
 
-INTERNAL_SYSTEM_IPS = get_internal_network()
+INTERNAL_SYSTEM_IPS = (get_internal_network(),)
 
 
 DATABASES = {