Unable to build openjdk-lts in lunar

[Vladimir Petko]

When building openjdk-lts in lunar a following error occurs:

```
dh_clean
dh_clean: warning: Compatibility levels before 10 are deprecated (level 9 in use)
 debian/rules binary
jtreg_version="$(dpkg-query -f '${Version}\n' -W )"; \
if ! dpkg --compare-versions 6+1-0~ le $jtreg_version; then \
  echo "Error: testsuite requires 6+1-0~ but $jtreg_version is installed"; \
  echo "Please update the dependency and regenerate debian/control"; \
  false; \
fi
dpkg: error: --compare-versions takes three arguments: <version> <relation> <version>

Type dpkg --help for help about installing and deinstalling packages [*];
Use 'apt' or 'aptitude' for user-friendly package management;
Type dpkg -Dhelp for a list of dpkg debug flag values;
Type dpkg --force-help for a list of forcing options;
Type dpkg-deb --help for help about manipulating *.deb files;

Options marked [*] produce a lot of output - pipe it through 'less' or 'more' !
Error: testsuite requires 6+1-0~ but 3.121ubuntu1

```

This is caused by missing `lunar` distribution when selecting jtreg package version.

[Ubuntu Foundations Team Bug Bot (crichton)]

The attachment "add lunar to jtreg selection" seems to be a patch. If it isn't, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are a member of the ~ubuntu-reviewers, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issues please contact him.]