copr-be: increase the chroot tmpfs space on builders

Mock allocated 75g before, and this started to be not enough for some
projects (tmpfs resides in ram + swap).  Increasing the size isn't a
huge deal for us since the major subset of builders is x86_64 and those
have pretty large (currently unused) swap disk size.  For aarch64 I had
to add a bit more storage to guarantee that the large tmpfs will fit
the swap (+17%).

roles/copr/backend/files/provision/builderpb-aws-aarch64.yml

@@ -21,7 +21,7 @@
       - device_name: sdb
         delete_on_termination: True
         volume_type: gp2
-        volume_size: 120
+        volume_size: 140
 
   tasks:
   - include: "spinup_aws_task.yml"

roles/copr/backend/files/provision/files/mock/site-defaults.cfg

@@ -15,7 +15,7 @@ config_opts['plugin_conf']['compress_logs_opts']['command'] = "/usr/bin/gzip -9
 config_opts['plugin_conf']['tmpfs_enable'] = True
 config_opts['plugin_conf']['tmpfs_opts'] = {}
 config_opts['plugin_conf']['tmpfs_opts']['required_ram_mb'] = 1024
-config_opts['plugin_conf']['tmpfs_opts']['max_fs_size'] = '75g'
+config_opts['plugin_conf']['tmpfs_opts']['max_fs_size'] = '120g'
 config_opts['plugin_conf']['tmpfs_opts']['mode'] = '0755'
 config_opts['plugin_conf']['tmpfs_opts']['keep_mounted'] = False