Add httpOptions.proxyURL option to Subscription #3844

Job	Run time
build	4m 38s
docker	3m 37s
e2e-test (ethereum, evmconnect, TestEthereumMultipartyE2ESuite, sqlite3, erc20_erc721, true)	7m 0s
e2e-test (ethereum, evmconnect, TestEthereumMultipartyE2ESuite, postgres, erc20_erc721, true)	7m 8s
e2e-test (ethereum, evmconnect, TestEthereumMultipartyE2ESuite, sqlite3, erc1155, true)	7m 29s
e2e-test (ethereum, evmconnect, TestEthereumMultipartyTokensRemoteNameE2ESuite, postgres, erc20_e...	3m 46s
e2e-test (fabric, TestFabricE2ESuite, sqlite3, none, true)	5m 10s
e2e-test (ethereum, evmconnect, TestEthereumGatewayE2ESuite, sqlite3, erc20_erc721, false)	4m 18s
e2e-test (fabric, TestFabricGatewayE2ESuite, sqlite3, none, false)	5m 10s
e2e-test (ethereum, ethconnect, TestEthereumMultipartyE2ESuite, sqlite3, erc20_erc721, true)	6m 30s
e2e-test (ethereum, ethconnect, TestEthereumGatewayE2ESuite, sqlite3, erc1155, false)	4m 5s
	58m 51s

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