kea-netconf (and other servers/agents) creating incorrectly named pid file

file name is kea-netconf.kea-netconf.pid instead of kea-netconf.pid

wlodek@debian9-64-2:~/installed$ cat git/var/kea/kea-netconf.kea-netconf.pid 
16207
wlodek@debian9-64-2:~/installed$ ps -aux | grep kea
root     16206  0.0  0.2  47612  3216 pts/0    S+   07:10   0:00 sudo git/sbin/kea-netconf -c kea-netconf.conf -d
root     16207  0.0  0.5 158128  9332 pts/0    S+   07:10   0:00 git/sbin/kea-netconf -c kea-netconf.conf -d
wlodek   16341  0.0  0.0  11112   940 pts/1    S+   07:11   0:00 grep kea