dashboards: remove path!="/favicon.ico" filter from requests rate graphs

The `path!="/favicon.ico"` filter has little sense, since there are many other special paths,
which may be filtered out - /metrics, /flags, /health, /ping, /robots.txt, /-/healthy, /-/ready, /reload, etc.
See /lib/httpserver/httpserver.go for more details.
It will be hard or impossible to maintain filters for all these paths, so it is better to drop this filter
in order to simplify queries and improve the consistency of these queries.

dashboards/victoriametrics-cluster.json

@@ -1127,7 +1127,7 @@
             "uid": "$ds"
           },
           "editorMode": "code",
-          "expr": "sum(rate(vm_http_requests_total{job=~\"$job\", instance=~\"$instance\", path!~\"/favicon.ico\"}[$__rate_interval])) by (path) > 0",
+          "expr": "sum(rate(vm_http_requests_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])) by (path) > 0",
           "format": "time_series",
           "intervalFactor": 1,
           "legendFormat": "{{path}}",
@@ -6125,7 +6125,7 @@
                 "uid": "$ds"
               },
               "editorMode": "code",
-              "expr": "sum(rate(vm_http_requests_total{job=~\"$job_select\", instance=~\"$instance\", path!~\"/favicon.ico|/metrics\"}[$__rate_interval])) by (path) > 0",
+              "expr": "sum(rate(vm_http_requests_total{job=~\"$job_select\", instance=~\"$instance\"}[$__rate_interval])) by (path) > 0",
               "format": "time_series",
               "intervalFactor": 1,
               "legendFormat": "__auto",
@@ -7232,7 +7232,7 @@
                 "uid": "$ds"
               },
               "editorMode": "code",
-              "expr": "sum(rate(vm_http_requests_total{job=~\"$job_insert\", instance=~\"$instance\", path!~\"/favicon.ico|/metrics\"}[$__rate_interval])) by (path) > 0",
+              "expr": "sum(rate(vm_http_requests_total{job=~\"$job_insert\", instance=~\"$instance\"}[$__rate_interval])) by (path) > 0",
               "format": "time_series",
               "intervalFactor": 1,
               "legendFormat": "__auto",

dashboards/victoriametrics.json

@@ -1035,7 +1035,7 @@
             "uid": "$ds"
           },
           "editorMode": "code",
-          "expr": "sum(rate(vm_http_requests_total{job=~\"$job\", instance=~\"$instance\", path!~\"/favicon.ico\"}[$__rate_interval])) by (path) > 0",
+          "expr": "sum(rate(vm_http_requests_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])) by (path) > 0",
           "format": "time_series",
           "interval": "",
           "intervalFactor": 1,

dashboards/vm/victoriametrics-cluster.json

@@ -1128,7 +1128,7 @@
             "uid": "$ds"
           },
           "editorMode": "code",
-          "expr": "sum(rate(vm_http_requests_total{job=~\"$job\", instance=~\"$instance\", path!~\"/favicon.ico\"}[$__rate_interval])) by (path) > 0",
+          "expr": "sum(rate(vm_http_requests_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])) by (path) > 0",
           "format": "time_series",
           "intervalFactor": 1,
           "legendFormat": "{{path}}",
@@ -6126,7 +6126,7 @@
                 "uid": "$ds"
               },
               "editorMode": "code",
-              "expr": "sum(rate(vm_http_requests_total{job=~\"$job_select\", instance=~\"$instance\", path!~\"/favicon.ico|/metrics\"}[$__rate_interval])) by (path) > 0",
+              "expr": "sum(rate(vm_http_requests_total{job=~\"$job_select\", instance=~\"$instance\"}[$__rate_interval])) by (path) > 0",
               "format": "time_series",
               "intervalFactor": 1,
               "legendFormat": "__auto",
@@ -7233,7 +7233,7 @@
                 "uid": "$ds"
               },
               "editorMode": "code",
-              "expr": "sum(rate(vm_http_requests_total{job=~\"$job_insert\", instance=~\"$instance\", path!~\"/favicon.ico|/metrics\"}[$__rate_interval])) by (path) > 0",
+              "expr": "sum(rate(vm_http_requests_total{job=~\"$job_insert\", instance=~\"$instance\"}[$__rate_interval])) by (path) > 0",
               "format": "time_series",
               "intervalFactor": 1,
               "legendFormat": "__auto",

dashboards/vm/victoriametrics.json

@@ -1036,7 +1036,7 @@
             "uid": "$ds"
           },
           "editorMode": "code",
-          "expr": "sum(rate(vm_http_requests_total{job=~\"$job\", instance=~\"$instance\", path!~\"/favicon.ico\"}[$__rate_interval])) by (path) > 0",
+          "expr": "sum(rate(vm_http_requests_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])) by (path) > 0",
           "format": "time_series",
           "interval": "",
           "intervalFactor": 1,

dashboards/vm/vmagent.json

@@ -191,7 +191,7 @@
             "uid": "$ds"
           },
           "editorMode": "code",
-          "expr": "sum(rate(vm_promscrape_scraped_samples_sum{job=~\"$job\", instance=~\"$instance\", path!~\"/favicon.ico\"}[$__rate_interval]))",
+          "expr": "sum(rate(vm_promscrape_scraped_samples_sum{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval]))",
           "interval": "",
           "legendFormat": "__auto",
           "range": true,
@@ -4429,7 +4429,7 @@
                 "uid": "$ds"
               },
               "exemplar": true,
-              "expr": "sum(rate(vm_ingestserver_request_errors_total{job=~\"$job\", instance=~\"$instance\", path!~\"/favicon.ico\"}[$__rate_interval])) by(type, net) > 0",
+              "expr": "sum(rate(vm_ingestserver_request_errors_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])) by(type, net) > 0",
               "interval": "",
               "legendFormat": "{{ type }} ({{net}})",
               "refId": "A"

dashboards/vmagent.json

@@ -190,7 +190,7 @@
             "uid": "$ds"
           },
           "editorMode": "code",
-          "expr": "sum(rate(vm_promscrape_scraped_samples_sum{job=~\"$job\", instance=~\"$instance\", path!~\"/favicon.ico\"}[$__rate_interval]))",
+          "expr": "sum(rate(vm_promscrape_scraped_samples_sum{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval]))",
           "interval": "",
           "legendFormat": "__auto",
           "range": true,
@@ -4428,7 +4428,7 @@
                 "uid": "$ds"
               },
               "exemplar": true,
-              "expr": "sum(rate(vm_ingestserver_request_errors_total{job=~\"$job\", instance=~\"$instance\", path!~\"/favicon.ico\"}[$__rate_interval])) by(type, net) > 0",
+              "expr": "sum(rate(vm_ingestserver_request_errors_total{job=~\"$job\", instance=~\"$instance\"}[$__rate_interval])) by(type, net) > 0",
               "interval": "",
               "legendFormat": "{{ type }} ({{net}})",
               "refId": "A"