Inv: Update build machines to be inline w/Jenkins

[Willsparker]

Ref: #619

Noticed whilst working on #1001 that the inventory.yml isn't particularly in sync with the node list at ci.adoptopenjdk.net/computer. This PR is to try and clean it up for the build machines. I've added the build machines that are ping-able and connected to Jenkins but not in inventory.yml, (from this list: #1001 (comment)). I also rearranged the order as to make sure they are alphabetical, and made sure their names are correct.
The build-linaro-centos76-armv8-1 machine has been removed as we no longer have it, looking at ci.adoptopenjdk.net/computer

[Willsparker]

Ref: The last commit.

Given that the arch armv8l didn't pass linting, I've changed it to armv8. I assume this should also be changed in the Jenkins node list too?

[Willsparker]

I'm not sure why Travis isn't liking build-marist-rhel77-s390x-1 or the spearhead provider. Any idea @sxa ?

[karianna]

lgtm

[karianna]

[DEPRECATION WARNING]: DEFAULT_SQUASH_ACTIONS option, Loop squashing is 
deprecated and this configuration will no longer be used , use a list directly 
with the module argument instead. This feature will be removed in version 2.11.
 Deprecation warnings can be disabled by setting deprecation_warnings=False in 
ansible.cfg.
[WARNING]:  * Failed to parse /home/travis/build/AdoptOpenJDK/openjdk-
infrastructure/ansible/plugins/inventory/adoptopenjdk_yaml.py with script
plugin: Inventory script (/home/travis/build/AdoptOpenJDK/openjdk-
infrastructure/ansible/plugins/inventory/adoptopenjdk_yaml.py) had an execution
error: Traceback (most recent call last):   File
"/home/travis/build/AdoptOpenJDK/openjdk-
infrastructure/ansible/plugins/inventory/adoptopenjdk_yaml.py", line 197, in
<module>     main()   File "/home/travis/build/AdoptOpenJDK/openjdk-
infrastructure/ansible/plugins/inventory/adoptopenjdk_yaml.py", line 116, in
main     raise Exception('Failed to parse host: %s' % e) Exception: Failed to
parse host: Invalid provider: spearhead
[WARNING]:  * Failed to parse /home/travis/build/AdoptOpenJDK/openjdk-
infrastructure/ansible/plugins/inventory/adoptopenjdk_yaml.py with ini plugin:
/home/travis/build/AdoptOpenJDK/openjdk-
infrastructure/ansible/plugins/inventory/adoptopenjdk_yaml.py:25: Expected
key=value host variable assignment, got: argparse
[WARNING]: Unable to parse /home/travis/build/AdoptOpenJDK/openjdk-
infrastructure/ansible/plugins/inventory/adoptopenjdk_yaml.py as an inventory
source
[WARNING]: No inventory was parsed, only implicit localhost is available
[WARNING]: Could not match supplied host pattern, ignoring: build-marist-
rhel77-s390x-1

[Willsparker]

I noticed the error message about build-marist-rhel77-s390x-1 not being parsed was due to adoptopenjdk_yaml.py failing, as it didn't like the spearhead provider, so I've added that in :-)