Bump minimal required version of metrics rock

`metrics >= 0.9.0` is required to use summary quantiles with
age buckets. `metrics >= 0.5.0, < 0.9.0` is unsupported
due to quantile overflow bug [1]. `metrics == 0.9.0` has bug that do
not permits to create summary collector without quantiles [2].
In fact, user may use `metrics >= 0.5.0`, `metrics != 0.9.0`
if he wants to use metrics without quantiles, and `metrics >= 0.9.0`
if he wants to use metrics with quantiles. But this is confusing,
so let's use a single restriction for both cases.

1. tarantool/metrics#235
2. tarantool/metrics#262

Follows up #224

.github/workflows/test_on_push.yaml

@@ -26,7 +26,7 @@ jobs:
           - tarantool-version: "2.8"
             metrics-version: "0.1.8"
           - tarantool-version: "2.8"
-            metrics-version: "0.9.0"
+            metrics-version: "0.10.0"
           - tarantool-version: "2.8"
             coveralls: true
             metrics-version: "0.12.0"

README.md

@@ -606,7 +606,7 @@ crud.disable_stats()
 crud.reset_stats()
 ```
 
-If [`metrics`](https://github.com/tarantool/metrics) `0.9.0` or greater
+If [`metrics`](https://github.com/tarantool/metrics) `0.10.0` or greater
 found, metrics collectors will be used by default to store statistics
 instead of local collectors. You can manually choose driver if needed.
 ```lua

crud/stats/metrics_registry.lua

@@ -45,23 +45,30 @@ local DEFAULT_AGE_PARAMS = {
 
 --- Check if application supports metrics rock for registry
 --
---  `metrics >= 0.9.0` is required to use summary with
+--  `metrics >= 0.10.0` is required.
+--  `metrics >= 0.9.0` is required to use summary quantiles with
 --  age buckets. `metrics >= 0.5.0, < 0.9.0` is unsupported
 --  due to quantile overflow bug
 --  (https://github.com/tarantool/metrics/issues/235).
+--  `metrics == 0.9.0` has bug that do not permits
+--  to create summary collector without quantiles
+--  (https://github.com/tarantool/metrics/issues/262).
+--  In fact, user may use `metrics >= 0.5.0`, `metrics != 0.9.0`
+--  if he wants to use metrics without quantiles, and `metrics >= 0.9.0`
+--  if he wants to use metrics with quantiles. But this is confusing,
+--  so let's use a single restriction for both cases.
 --
 -- @function is_supported
 --
--- @treturn boolean Returns true if `metrics >= 0.9.0` found, false otherwise.
+-- @treturn boolean Returns true if `metrics >= 0.10.0` found, false otherwise.
 --
 function registry.is_supported()
     if is_package == false then
         return false
     end
 
-    -- Only metrics >= 0.9.0 supported.
-    local is_summary, summary = pcall(require, 'metrics.collectors.summary')
-    if is_summary == false or summary.rotate_age_buckets == nil then
+    -- Only metrics >= 0.10.0 supported.
+    if metrics.unregister_callback == nil then
         return false
     end