run-tests: replace '#' with '-' in temp path of repos created for tests If we have multiple cases in a test, that leads us to a temp path of format "<temp-path>-<case1>#<case2>". This leads to hg.parseurl() parsing the path and take part after `#` as a branch name. I encountered this bug while adding support for share-safe case in next patch. Differential Revision: https://phab.mercurial-scm.org/D8647