ccs-flatten/flatten: more secure default wrt. exec'ing agents

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
Add utils_cluster: more systemic cluster system detection/query

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
utils_cluster: fix dictionary-valueiterator issue

(discovered with unit tests, yay)

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
tests/utils_cluster: exercise cluster_pcs_flatiron predicate

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
commands/ccs2pcs: use cluster_pcs_flatiron instead in alias

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
utils_cluster: update knowledge about cluster in Fedora/Ubuntu

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
format: fix creating "RO copies" of dicts needlessly

...as we have a better construct for that now (since commit
'Solve a "read-only dict as API" question once forever').

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
format: cosmetics (max 80 chars per line)

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
run-dev: fix typo sys.path -> sys.argv

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
run-{check,tests}: global sanity check + prologue for tests

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
run-{check,tests}: limit inferference with user's modules

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
run-tests: POSIX shell doesn't know: declare, source

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
filters/ccs2ccsflat: better error reporting wrt. ccs_flatten

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>
Bump version to 0.1.3

Signed-off-by: Jan Pokorný <jpokorny@redhat.com>