Bug 1337366 - SHA1 repacks configs for ESR52 r=jlund a=release DONTBUILD

MozReview-Commit-ID: LM1wuXGLtn3

--HG--
rename : testing/mozharness/configs/partner_repacks/staging_release_mozilla-release_desktop.py => testing/mozharness/configs/partner_repacks/staging_release_mozilla-esr52_desktop.py
extra : rebase_source : e470c6e7d0f52577e95afd730337b13b710e93d4

testing/mozharness/configs/partner_repacks/staging_release_mozilla-esr52_desktop.py

@@ -0,0 +1,6 @@
+config = {
+    "appName": "Firefox",
+    "log_name": "partner_repack",
+    "repack_manifests_url": "https://github.com/mozilla-partners/mozilla-sha1-manifest",
+    "repo_file": "https://raw.githubusercontent.com/mozilla/git-repo/master/repo",
+}