revert: fabric8 client upgrade, will target next minor instead (#3453) #7372

Job	Run time
sample_operators_tests (sample-operators/mysql-schema)	4m 9s
sample_operators_tests (sample-operators/leader-election)	4m 39s
sample_operators_tests (sample-operators/webpage)	4m 40s
sample_operators_tests (sample-operators/operations)	9m 31s
sample_operators_tests (sample-operators/tomcat-operator)	4m 40s
	27m 39s

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