application fails to start when setting spring.sleuth.web.enabled=false

[jorgheymans]

Tested against 2.1.1 and 2.1.2

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APPLICATION FAILED TO START
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Description:

Parameter 1 of method httpTracing in org.springframework.cloud.sleuth.instrument.web.TraceHttpAutoConfiguration required a bean of type 'org.springframework.cloud.sleuth.instrument.web.SkipPatternProvider' that could not be found.

The injection point has the following annotations:
	- @org.springframework.beans.factory.annotation.Autowired(required=true)

The following candidates were found but could not be injected:
	- Bean method 'sleuthSkipPatternProvider' in 'TraceWebAutoConfiguration' not loaded because @ConditionalOnProperty (spring.sleuth.web.enabled) found different value in property 'spring.sleuth.web.enabled'


Action:

Consider revisiting the entries above or defining a bean of type 'org.springframework.cloud.sleuth.instrument.web.SkipPatternProvider' in your configuration.

[jorgheymans]

<dependencyManagement>
            <dependency>
                <!-- Import dependency management from Spring Boot -->
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>2.1.7.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Greenwich.SR2</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>io.zipkin.brave</groupId>
                <artifactId>brave-bom</artifactId>
                <version>5.6.11</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
</dependencyManagement>

and overriding sleuth version:

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-zipkin</artifactId>
            <version>2.1.2.RELEASE</version>
        </dependency>