Add r7g arm64 runner with more memory (#7146)

This is the equivalent of `linux.12xlarge.memory` we are using to build
vLLM, but for arm64

---------

Signed-off-by: Huy Do <huydhn@gmail.com>

Author: huydhn

.github/canary-scale-config.yml

@@ -172,6 +172,11 @@ runner_types:
     instance_type: m8g.4xlarge
     is_ephemeral: true
     os: linux
+  c.linux.arm64.r7g.12xlarge.memory:
+    disk_size: 600
+    instance_type: r7g.12xlarge
+    is_ephemeral: true
+    os: linux
   c.linux.arm64.2xlarge.ephemeral:
     disk_size: 256
     instance_type: t4g.2xlarge

.github/lf-canary-scale-config.yml

@@ -172,6 +172,11 @@ runner_types:
     instance_type: m8g.4xlarge
     is_ephemeral: true
     os: linux
+  lf.c.linux.arm64.r7g.12xlarge.memory:
+    disk_size: 600
+    instance_type: r7g.12xlarge
+    is_ephemeral: true
+    os: linux
   lf.c.linux.arm64.2xlarge.ephemeral:
     disk_size: 256
     instance_type: t4g.2xlarge

.github/lf-scale-config.yml

@@ -172,6 +172,11 @@ runner_types:
     instance_type: m8g.4xlarge
     is_ephemeral: true
     os: linux
+  lf.linux.arm64.r7g.12xlarge.memory:
+    disk_size: 600
+    instance_type: r7g.12xlarge
+    is_ephemeral: true
+    os: linux
   lf.linux.arm64.2xlarge.ephemeral:
     disk_size: 256
     instance_type: t4g.2xlarge

.github/scale-config.yml

@@ -168,6 +168,11 @@ runner_types:
     instance_type: m8g.4xlarge
     is_ephemeral: true
     os: linux
+  linux.arm64.r7g.12xlarge.memory:
+    disk_size: 600
+    instance_type: r7g.12xlarge
+    is_ephemeral: true
+    os: linux
   linux.arm64.2xlarge.ephemeral:
     disk_size: 256
     instance_type: t4g.2xlarge