* gnu/tests/telephony.scm (%dummy-jami-account-partial): New variable.
(make-jami-os): Add a PARTIAL? argument and use it to select the jami-account
variant to use.
(%jami-os-provisioning-partial): New variable.
(run-jami-test): Add a PARTIAL? argument, and use it to select operating
system variant. Skip allowed-contacts and moderators test when PARTIAL? is
true.
(%test-jami-provisioning-partial): New test.