OPSEXP-3015: set sensible default for max upload for compose #1880

Job	Run time
build_vars	4s
build_vars	4s
pre-release_values.yaml on alfresco-content-services	12m 20s
pre-release_values.yaml on alfresco-content-services	9m 18s
7.3.N_values.yaml on alfresco-content-services	5m 49s
7.3.N_values.yaml on alfresco-content-services	5m 49s
values.yaml on alfresco-content-services	9m 39s
values.yaml on alfresco-content-services	9m 39s
7.4.N_values.yaml on alfresco-content-services	6m 53s
7.4.N_values.yaml on alfresco-content-services	6m 53s
	1h 6m 28s

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