build: fix influxdb download url (backport #190) (#192)

This is an automatic backport of pull request #190 done by [Mergify](https://mergify.io).


---


<details>
<summary>Mergify commands and options</summary>

<br />

More conditions and actions can be found in the [documentation](https://docs.mergify.io/).

You can also trigger Mergify actions by commenting on this pull request:

- `@Mergifyio refresh` will re-evaluate the rules
- `@Mergifyio rebase` will rebase this PR on its base branch
- `@Mergifyio update` will merge the base branch into this PR
- `@Mergifyio backport <destination>` will backport this PR on `<destination>` branch

Additionally, on Mergify [dashboard](https://dashboard.mergify.io/) you can:

- look at your merge queues
- generate the Mergify configuration with the config editor.

Finally, you can contact us on https://mergify.io/
</details>

layers/layer1_metrics/0020_influxdb/Makefile.mk

@@ -4,8 +4,8 @@ include $(MFEXT_HOME)/share/package.mk
 export NAME=influxdb
 export VERSION=1.7.9-1
 export EXTENSION=tar.gz
-export CHECKTYPE=SHA256
-export CHECKSUM=8f7db67bc966815acee81799b5b2db200686f9315acf3dfb3486bd183ec13d35
+export CHECKTYPE=MD5
+export CHECKSUM=f7796c193739367b02b53cc7a9000d83
 DESCRIPTION=\
 INFLUXDB is an open source time series database with no external dependencies. It's useful for recording metrics, events, and performing analytics
 WEBSITE=https://www.influxdata.com

layers/layer1_metrics/0020_influxdb/sources

@@ -1 +1 @@
-https://dl.influxdata.com/influxdb/releases/influxdb-1.7.9_linux_amd64.tar.gz
+https://github.com/metwork-framework/external_sources/blob/master/influxdb-1.7.9-1.tar.gz?raw=true