Deploy hostname

<modificator>
	<uid>org.bayrell.modificator.deploy_hostname</uid>
	<name>Deploy hostname</name>
	<version>1.0</version>
	<xml name="bayrell.org" priority="10">https://cloud.bayrell.org/marketplace/org.bayrell.modificator.deploy_hostname.xml</xml>
	<xml name="github.com" priority="20">https://raw.githubusercontent.com/bayrell-os/marketplace/main/org.bayrell.modificator.deploy_hostname.xml</xml>
	<date>2022-08-09T17:15:00+06:00</date>
	<operations>
		<operation type="remove">
			<path>/template/yaml/services/*/deploy/placement</path>
		</operation>
		<operation type="add">
			<path>/template/yaml/services/*/deploy</path>
			<value>
				<placement>
					<constraints type="array">node.hostname == _var_hostname_</constraints>
				</placement>
			</value>
		</operation>
		<operation type="add">
			<path>/template/variables</path>
			<notExists>/template/variables/variable[name="_var_hostname_"]</notExists>
			<value>
				<variable>
					<name>_var_hostname_</name>
					<label>Hostname</label>
					<type>string</type>
				</variable>
			</value>
		</operation>
	</operations>
</modificator>