fix graylog grok pattern (#1171)

Author: matusdrobuliak66

services/graylog/data/contentpacks/osparc-custom-content-pack-v2.json

@@ -1,7 +1,7 @@
 {
   "v": "1",
   "id": "dfaeea11-bde6-4203-9cfe-6ca2a23ca22e",
-  "rev": 44,
+  "rev": 45,
   "name": "osparc-custom-content-pack-v2",
   "summary": "osparc-custom-content-pack-v2",
   "description": "",
@@ -623,7 +623,7 @@
             "configuration": {
               "grok_pattern": {
                 "@type": "string",
-                "@value": "log_level=%{WORD:log_level} \\| log_timestamp=%{TIMESTAMP_ISO8601:log_timestamp} \\| log_source=%{NOTSPACE:log_source} \\| log_uid=%{NOTSPACE:log_uid} \\| log_oec=%{NOTSPACE:log_oec}\\| log_trace_id=%{NOTSPACE:log_trace_id} \\| (log_span_id=%{DATA:log_span_id}\\|)? log_msg=%{GREEDYDATA:log_msg}"
+                "@value": "log_level=%{WORD:log_level} \\| log_timestamp=%{TIMESTAMP_ISO8601:log_timestamp} \\| log_source=%{NOTSPACE:log_source} \\| log_uid=%{NOTSPACE:log_uid} \\| log_oec=%{NOTSPACE:log_oec} \\| log_trace_id=%{NOTSPACE:log_trace_id} \\| log_span_id=%{DATA:log_span_id} \\| log_msg=%{GREEDYDATA:log_msg}"
               },
               "named_captures_only": {
                 "@type": "boolean",