jobs: TTCN3-centos: set OSMOCOM_REPO_TESTSUITE_MIRROR

In previous patch Id114d55edc2ba92f7851243ab7df51db332079c4, only the
OSMOCOM_REPO_MIRROR should have been overridden. However
OSMOCOM_REPO_TESTSUITE_MIRROR defaults to OSMOCOM_REPO_MIRROR, so
explicitly set it in this patch to the opensuse mirror.

This fixes problems while building debian-bullseye-titan caused by the
different directory structure of both mirrors, and OSMOCOM_REPO_PATH
intentionally not taken into account while building the testsuite
docker image.

This is part 2/2 of fixing TTCN3-centos-bts-test, which has been failing
since OSMOCOM_REPO_MIRROR was changed in osmo-ci.git. Part 1 is in
docker-playground I78e0445a1b82e5cd72ecaa86e8fe25516b19f485.

Change-Id: I8201f34a0f9747eea78c358a626cc3981d7407c4
1 file changed