t: add coverage of -L color short option

Problem: In several tests the -L (short option of --color) is tested
without arguments, but it is not tested with arguments.

Add "-Lalways" as an additional test in t1008-kvs-eventlog.t and
t2230-job-info-lookup.t.

t/t1008-kvs-eventlog.t

@@ -69,7 +69,7 @@ test_expect_success 'flux kvs eventlog get/wait-event reject invalid --color' '
 	test_must_fail flux kvs eventlog get --color=foo test.human &&
 	test_must_fail flux kvs eventlog wait-event --color=foo test.human primus
 '
-for opt in "-L" "--color" "--color=always"; do
+for opt in "-L" "-Lalways" "--color" "--color=always"; do
 	test_expect_success "flux kvs eventlog get $opt forces color on" '
 		name=notty${opt##--color=} &&
 		outfile=color-${name:-default}.out &&

t/t2230-job-info-lookup.t

@@ -255,7 +255,7 @@ test_expect_success 'flux job eventlog/wait-event reject invalid --color' '
         test_must_fail flux job eventlog --color=foo $jobid &&
         test_must_fail flux job wait-event --color=foo $jobid
 '
-for opt in "-L" "--color" "--color=always"; do
+for opt in "-L" "-Lalways" "--color" "--color=always"; do
         test_expect_success "flux job eventlog $opt forces color on" '
                 name=notty${opt##--color=} &&
                 outfile=color-${name:-default}.out &&