Split unpublish request into multiple requests #2158

Job	Run time
unit-tests (-DOC_CLOUD_ENABLED=ON -DOC_COLLECTIONS_IF_CREATE_ENABLED=ON -DOC_PUSH_ENABLED=ON -DOC... / unit-test-with-cfg	5m 46s
unit-tests (-DOC_DNS_LOOKUP_IPV6_ENABLED=ON -DOC_OSCORE_ENABLED=OFF -DOC_REPRESENTATION_REALLOC_E... / unit-test-with-cfg	6m 26s
unit-tests (-DOC_IPV4_ENABLED=ON -DOC_TCP_ENABLED=ON -DOC_DYNAMIC_ALLOCATION_ENABLED=OFF -DOC_RES... / unit-test-with-cfg	5m 1s
unit-tests (-DOC_SECURITY_ENABLED=OFF -DOC_DYNAMIC_ALLOCATION_ENABLED=OFF -DOC_JSON_ENCODER_ENABL... / unit-test-with-cfg	3m 36s
unit-tests (-DOC_SECURITY_ENABLED=OFF -DOC_IPV4_ENABLED=ON -DOC_COLLECTIONS_IF_CREATE_ENABLED=ON ... / unit-test-with-cfg	3m 27s
plgd-device-tests (cloud-server) / plgd-device-test-with-cfg	5m 21s
unit-tests (-DOC_SECURITY_ENABLED=OFF -DOC_CLOUD_ENABLED=ON -DOC_COLLECTIONS_IF_CREATE_ENABLED=ON... / unit-test-with-cfg	4m 18s
plgd-device-tests (cloud-server-discovery-resource-observable-access-in-RFOTM-rep-realloc, -DOC_D... / plgd-device-test-with-cfg	5m 19s
plgd-hub-tests (cloud-server-discovery-resource-observable-access-in-RFOTM, -DOC_DISCOVERY_RESOUR... / plgd-hub-test-with-cfg	8m 26s
plgd-hub-tests (dtls-cloud-server-rep-realloc, -DOC_REPRESENTATION_REALLOC_ENCODING_ENABLED=ON, -... / plgd-hub-test-with-cfg	8m 32s
Sonar Cloud scan	22m 52s
	1h 19m 4s

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