test: vinyl/layout: fix bloom filter filtering in output

We filter bloom filters, because they depend on ICU version and hence
the test output may vary from one platform to another (see commit
0a37ccad "Filter out bloom_filter in vinyl/layout.test.lua").
However, using test_run for this is unreliable, because a bloom string
can contain newline characters and hence be split in multiple lines in
console output, in which case the filter won't work. Fix this by
filtering bloom_filter manually.

test/vinyl/layout.result

@@ -95,6 +95,9 @@ for i, path in pairs(files) do
         local rows = {}
         local i = 1
         for lsn, row in xlog.pairs(path) do
+            if row.BODY.bloom_filter ~= nil then
+                row.BODY.bloom_filter = '<bloom_filter>'
+            end
             rows[i] = row
             i = i + 1
         end
@@ -118,10 +121,6 @@ test_run:cmd("push filter 'offset: .*' to 'offset: <offset>'")
 ---
 - true
 ...
-test_run:cmd("push filter 'bloom_filter: .*' to 'bloom_filter: <bloom_filter>'")
----
-- true
-...
 result
 ---
 - - - 00000000000000000009.vylog

test/vinyl/layout.test.lua

@@ -42,6 +42,9 @@ for i, path in pairs(files) do
         local rows = {}
         local i = 1
         for lsn, row in xlog.pairs(path) do
+            if row.BODY.bloom_filter ~= nil then
+                row.BODY.bloom_filter = '<bloom_filter>'
+            end
             rows[i] = row
             i = i + 1
         end
@@ -55,6 +58,5 @@ box.backup.stop() -- resume the garbage collection process
 
 test_run:cmd("push filter 'timestamp: .*' to 'timestamp: <timestamp>'")
 test_run:cmd("push filter 'offset: .*' to 'offset: <offset>'")
-test_run:cmd("push filter 'bloom_filter: .*' to 'bloom_filter: <bloom_filter>'")
 result
 test_run:cmd("clear filter")