ci: retry slow and community tests on failure
ci: retry slow and community tests on failure

Some tests spontaneously fail due to internet
connectivity issues. This commit adds retry logic to
filter-out possible false negatives.

Signed-off-by: Dmitry Fleytman <a8cf97adadec4e1b734a39bc5aea71b5741cfca1@daynix.com>

rbld/rebuild,rbld/rebuild,rbld/rebuild,daynix/rebuild,daynix/rebuild,daynix/rebuild