t:rose-suite-run: basic tests.

Test with or without suite hosts.
Check initial run OK.
While suite running, check subsequence install, run, restart fails.
While suite running, check reload works.

And remove unnecessary test headers.
rose suite-run: test --install-only mode.

Fix variable reference problem with --install-only mode.
Remove --force mode. Should use --reload instead.
Update CHANGES.md.
Merge branch 'master' into t.rose-suite-run
Merge branch 'master' into t.rose-suite-run
t: fix incorrect redirection syntax.
rose suite-run --local-install-only: new option.

And more tests.
Documentation update.
Merge pull request #769 from matthewrmshin/t.rose-suite-run

rose suite-run: test battery: basics
Merge branch 'master' of github.com:metomi/rose into gh-pages