dist/ci/osc-init: allow output file location to be set via OSCRC env var.

dist/ci/osc-init

@@ -1,5 +1,6 @@
 #!/bin/bash
 
+: ${OSCRC:=~/.oscrc}
 OBS_API="${OBS_API:-https://api.opensuse.org}"
 if [ -z ${OBS_PASS+x} ] || [ -z "$OBS_PASS" ] ; then
   OBS_API="$OBS_API/public"
@@ -8,7 +9,7 @@ fi
 echo "OBS_API=$OBS_API"
 echo "OBS_USER=$OBS_USER"
 
-cat << eom > ~/.oscrc
+cat << eom > "$OSCRC"
 [general]
 apiurl = $OBS_API
 [$OBS_API]