/usr/share/kservices5/searchproviders/lpkp.desktop is in kubuntu-web-shortcuts 17.04ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | [Desktop Entry]
Charset=
Hidden=false
Keys=lpkp
Name=Kubuntu Git Packaging Launchpad
Query=https://code.launchpad.net/~kubuntu-packagers/kubuntu-packaging/+git/\\{@}
ServiceTypes=SearchProvider
Type=Service
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