Fix tool path for arm64

[sed-i]

Issue

On arm, grafana-agent produces the following logs:

Could not locate cos-tool at: "cos-tool-aarch64"
Skipping injection of juju topology as label matchers
`cos-tool` unavailable. Leaving expression unchanged: ...

while the filename we have on disk is cos-tool-arm64.

Solution

Map aarch64 to arm64.

Related: #29

Context

This is only a partial fix, because the CosTool class is still replicated in:

• prometheus_scrape
• remote_write
• grafana_dashboard
• loki_push_api

Related:

• https://github.com/canonical/grafana-agent-operator/blob/c240db4308374f4e64d146813cae8502b170c2f5/src/snap_management.py#L90

Testing Instructions

Deploy the following bundle, and when it settles, inspect juju debug-log --replay | grep "Could not locate cos-tool"

default-base: [email protected]/stable
applications:
  ga20:
    charm: grafana-agent
    channel: latest/edge
    revision: 453
    base: [email protected]/stable
  ga22:
    charm: grafana-agent
    channel: latest/edge
    revision: 452
    base: [email protected]/stable
  ga24:
    charm: grafana-agent
    channel: latest/edge
    revision: 454
  hwo20:
    charm: hardware-observer
    channel: latest/stable
    revision: 219
    base: [email protected]/stable
    resources:
      perccli-deb: 1
      sas2ircu-bin: 1
      sas3ircu-bin: 1
      storcli-deb: 1
  hwo22:
    charm: hardware-observer
    channel: latest/stable
    revision: 221
    base: [email protected]/stable
    resources:
      perccli-deb: 1
      sas2ircu-bin: 1
      sas3ircu-bin: 1
      storcli-deb: 1
  hwo24:
    charm: hardware-observer
    channel: latest/stable
    revision: 217
    resources:
      perccli-deb: 1
      sas2ircu-bin: 1
      sas3ircu-bin: 1
      storcli-deb: 1
  ssc:
    charm: self-signed-certificates
    channel: latest/stable
    revision: 265
    base: [email protected]/stable
    num_units: 1
    to:
    - "3"
    constraints: arch=arm64
  ub20:
    charm: ubuntu
    channel: latest/stable
    revision: 25
    base: [email protected]/stable
    num_units: 1
    to:
    - "0"
    constraints: arch=arm64
    storage:
      block: loop,100M
      files: rootfs,100M
  ub22:
    charm: ubuntu
    channel: latest/stable
    revision: 25
    base: [email protected]/stable
    num_units: 1
    to:
    - "1"
    constraints: arch=arm64
    storage:
      block: loop,100M
      files: rootfs,100M
  ub24:
    charm: ubuntu
    channel: latest/stable
    revision: 25
    num_units: 1
    to:
    - "2"
    constraints: arch=arm64
    storage:
      block: loop,100M
      files: rootfs,100M
machines:
  "0":
    constraints: arch=arm64
    base: [email protected]/stable
  "1":
    constraints: arch=arm64
    base: [email protected]/stable
  "2":
    constraints: arch=arm64
  "3":
    constraints: arch=arm64
    base: [email protected]/stable
relations:
- - ga20:juju-info
  - ub20:juju-info
- - ga22:juju-info
  - ub22:juju-info
- - ga24:juju-info
  - ub24:juju-info
- - hwo20:general-info
  - ub20:juju-info
- - hwo20:cos-agent
  - ga20:cos-agent
- - hwo22:general-info
  - ub22:juju-info
- - hwo22:cos-agent
  - ga22:cos-agent
- - hwo24:general-info
  - ub24:juju-info
- - hwo24:cos-agent
  - ga24:cos-agent
- - ssc:certificates
  - ga20:certificates
- - ssc:certificates
  - ga22:certificates
- - ssc:certificates
  - ga24:certificates