update links to istio-prom.tpl (#67)

Signed-off-by: Michael Kalantar <[email protected]>
Co-authored-by: Srinivasan Parthasarathy <[email protected]>

Author: kalantar

docs/tutorials/custom-metrics/one-version.md

@@ -37,7 +37,7 @@ Validate [SLOs](../../getting-started/concepts.md#service-level-objectives) for
 ```shell
 iter8 k launch \
 --set "tasks={custommetrics,assess}" \
---set custommetrics.templates.istio-prom="https://raw.githubusercontent.com/iter8-tools/hub/iter8-0.13.0/templates/custommetrics/istio-prom.tpl" \
+--set custommetrics.templates.istio-prom="https://raw.githubusercontent.com/iter8-tools/hub/main/templates/custommetrics/istio-prom.tpl" \
 --set custommetrics.values.labels.namespace=default \
 --set custommetrics.values.labels.destination_app=httpbin \
 --set assess.SLOs.upper.istio-prom/error-rate=0 \
@@ -49,7 +49,7 @@ iter8 k launch \
 ??? note "About this experiment"
     This experiment consists of two [tasks](../../getting-started/concepts.md#iter8-experiment), namely, [custommetrics](../../user-guide/tasks/custommetrics.md), and [assess](../../user-guide/tasks/assess.md). 
 
-    The `custommetrics` task in this experiment [works](../../user-guide/tasks/custommetrics.md#how-it-works) by downloading a [provider template](../../user-guide/tasks/custommetrics.md#provider-template) named `istio-prom` from a URL, [substituting the template variables with values](../../user-guide/tasks/custommetrics.md#computing-variable-values), using the resulting [provider spec](../../user-guide/tasks/custommetrics.md#provider-spec) to query Prometheus for metrics, and [processing the response from Prometheus](../../user-guide/tasks/custommetrics.md#processing-response) to extract the metric values. Metrics defined by this template include `error-rate` and `latency-mean`; the [Prometheus labels](https://istio.io/latest/docs/reference/config/metrics/#labels) used by this template are stored in `labels`; all the metrics and variables associated with this template are [documented as part of the template](https://raw.githubusercontent.com/iter8-tools/hub/iter8-0.13.0/templates/custommetrics/istio-prom.tpl). 
+    The `custommetrics` task in this experiment [works](../../user-guide/tasks/custommetrics.md#how-it-works) by downloading a [provider template](../../user-guide/tasks/custommetrics.md#provider-template) named `istio-prom` from a URL, [substituting the template variables with values](../../user-guide/tasks/custommetrics.md#computing-variable-values), using the resulting [provider spec](../../user-guide/tasks/custommetrics.md#provider-spec) to query Prometheus for metrics, and [processing the response from Prometheus](../../user-guide/tasks/custommetrics.md#processing-response) to extract the metric values. Metrics defined by this template include `error-rate` and `latency-mean`; the [Prometheus labels](https://istio.io/latest/docs/reference/config/metrics/#labels) used by this template are stored in `labels`; all the metrics and variables associated with this template are [documented as part of the template](https://raw.githubusercontent.com/iter8-tools/hub/main/templates/custommetrics/istio-prom.tpl). 
 
     The [assess](../../user-guide/tasks/assess.md) task verifies if the app satisfies the specified SLOs: i) there are no errors, and ii) the mean latency of the app does not exceed 100 msec. 
 

docs/tutorials/custom-metrics/two-or-more-versions.md

@@ -27,7 +27,7 @@ Validate [SLOs](../../getting-started/concepts.md#service-level-objectives) for
 ```shell
 iter8 k launch \
 --set "tasks={custommetrics,assess}" \
---set custommetrics.templates.istio-prom="https://raw.githubusercontent.com/iter8-tools/hub/iter8-0.13.0/templates/custommetrics/istio-prom.tpl" \
+--set custommetrics.templates.istio-prom="https://raw.githubusercontent.com/iter8-tools/hub/main/templates/custommetrics/istio-prom.tpl" \
 --set custommetrics.values.labels.namespace=default \
 --set custommetrics.values.labels.destination_app=httpbin \
 --set custommetrics.values.labels.reporter=destination \

docs/user-guide/tasks/custommetrics.md

@@ -13,7 +13,7 @@ In this example, the `custommetrics` task fetches metrics from the Prometheus da
 ```shell
 iter8 k launch \
 --set "tasks={custommetrics,assess}" \
---set custommetrics.templates.istio-prom="https://raw.githubusercontent.com/iter8-tools/hub/iter8-0.13.0/templates/custommetrics/istio-prom.tpl" \
+--set custommetrics.templates.istio-prom="https://raw.githubusercontent.com/iter8-tools/hub/main/templates/custommetrics/istio-prom.tpl" \
 --set custommetrics.values.labels.destination_app=httpbin \
 --set custommetrics.values.labels.namespace=default \
 --set assess.SLOs.upper.istio-prom/error-rate=0 \
@@ -109,7 +109,7 @@ The `ProviderSpec` and `Metric` data structures together supply Iter8 with all t
 Rather than supplying [provider specs](#provider-spec) directly, Iter8 enables users to supply one or more [Golang templates](https://pkg.go.dev/text/template) for provider specs. Iter8 combines the provider templates with [values](#computing-variable-values), in order to generate [provider specs](#provider-spec) in YAML format, and uses them to query for the metrics.
 
 Example providers specs:
-  * [istio-prom](https://raw.githubusercontent.com/iter8-tools/hub/iter8-0.13.0/templates/custommetrics/istio-prom.tpl) for [Istio's Prometheus plugin](https://istio.io/latest/docs/ops/integrations/prometheus/)
+  * [istio-prom](https://raw.githubusercontent.com/iter8-tools/hub/main/templates/custommetrics/istio-prom.tpl) for [Istio's Prometheus plugin](https://istio.io/latest/docs/ops/integrations/prometheus/)
 
 In order to create [provider templates](#provider-template) and use them in experiments, it is necessary to have a clear understanding of how variable values are computed, and how the response from the database is processed by Iter8. We describe these steps next.
 
@@ -128,7 +128,7 @@ Variable values are configured explicitly by the user during experiment launch.
     ```shell
     iter8 k launch \
     --set "tasks={custommetrics,assess}" \
-    --set custommetrics.templates.istio-prom="https://raw.githubusercontent.com/iter8-tools/hub/iter8-0.13.0/templates/custommetrics/istio-prom.tpl" \
+    --set custommetrics.templates.istio-prom="https://raw.githubusercontent.com/iter8-tools/hub/main/templates/custommetrics/istio-prom.tpl" \
     --set custommetrics.values.labels.namespace=default \
     --set custommetrics.values.labels.destination_app=httpbin \
     --set custommetrics.values.labels.reporter=destination \