Rebase to on top of NCS v2.5.0 (#12)

This points our NCS module to a branch that is v2.5.0 upstream NCS tag,
with the changes from the `gminn/lte-metrics` branch rebased on top.

I'm also updating to latest 1.5.0-rc branch for the Memfault SDK, which
has some other fixes for FOTA (namely, handle CDN cert retry loop).

And setting a few more Kconfig options:

- disable the NRF_CLOUD_FOTA module, it's pretty large and we don't use
  it
- got back to default log level of 3, INFO, which is much more useful
  when testing vs. 2=WARNING

This works for FOTA, though might be unrelated to the actual root cause.
But I think it's cleaner to base our test app on a released NCS branch.

overlay-memfault.conf

@@ -31,4 +31,11 @@ CONFIG_MEMFAULT_EVENT_STORAGE_SIZE=2048
 # Configure frequency of periodic upload and heartbeat collection
 CONFIG_MEMFAULT_HTTP_PERIODIC_UPLOAD=y
 CONFIG_MEMFAULT_HTTP_PERIODIC_UPLOAD_INTERVAL_SECS=10800
-CONFIG_DEBUG_MODULE_MEMFAULT_HEARTBEAT_INTERVAL_SEC=3600
+CONFIG_DEBUG_MODULE_MEMFAULT_HEARTBEAT_INTERVAL_SEC=3600
+
+# To override the version for FOTA testing, set the following line
+# CONFIG_MEMFAULT_NCS_FW_VERSION_PREFIX=\"0.0.1+\"
+
+# Disable NRF Cloud FOTA to save some kB, we don't use it
+CONFIG_NRF_CLOUD_FOTA=n
+CONFIG_MEMFAULT_FOTA=y

prj.conf

@@ -63,6 +63,7 @@ CONFIG_DOWNLOAD_CLIENT_HTTP_FRAG_SIZE_1024=y
 CONFIG_DOWNLOAD_CLIENT_STACK_SIZE=4096
 CONFIG_DOWNLOAD_CLIENT_BUF_SIZE=2300
 CONFIG_DOWNLOAD_CLIENT_MAX_HOSTNAME_SIZE=128
+CONFIG_DOWNLOAD_CLIENT_MAX_FILENAME_SIZE=400
 
 # Flash - Used in FOTA, settings and storage for P-GPS.
 CONFIG_FLASH=y
@@ -117,7 +118,8 @@ CONFIG_RTT_CONSOLE=n
 CONFIG_USE_SEGGER_RTT=n
 CONFIG_SHELL_BACKEND_RTT=n
 
-CONFIG_LOG_DEFAULT_LEVEL=2
+# Default log level 3=INFO
+CONFIG_LOG_DEFAULT_LEVEL=3
 
 # Ensure backend uses shell for logging so that logging
 # output and console are available in the same window

west.yml

@@ -11,13 +11,13 @@ manifest:
       # TODO: Remove url and revision when this is no
       # longer needed
       url: https://github.com/memfault/sdk-nrf.git
-      revision: gminn/lte-metrics
+      revision: gminn/v2.5.0-lte-metrics
       import: true
 
     - name: memfault-firmware-sdk
       url: https://github.com/memfault/memfault-firmware-sdk
       path: modules/lib/memfault-firmware-sdk
-      revision: "1.4.3"
+      revision: "release/1.5.0"
 
   self:
     path: firmware