[FIXED JENKINS-15094] - Handle null parameter values in BuildCommand (CLI) and Parameter classes (CLI).

The change adds missing checks for null ParameterValue, which may be passed from the CLI.
It prevents the death of Jenkins executors during the canTake() check of node labels.
Signed-off-by: NOleg Nenashev <o.v.nenashev@gmail.com>

Bringing this to the parity with ParameterizedJobMixIn.doBuild()

Instead of returning JSON, it returns "201 Created" and responds with the location of the queue item, through which the caller can track how it passes through the queue and eventually gets built/cancelled.

The approach in pull request #750 that relies on
AbstractProject.getQueueItem() is inherently unreliable, because
item can be immediately built before the JSON is rendered, or it might
corresponds to other queued items if the build supports concurrent
builds, etc.

Introduced ParameterizedJobMixIn so that non-AbstractProject’s can use ParametersDefinitionProperty.

"201 Created" response doesn't work well with a browser as the user agent.

This came from Alpha CSP guys during JUC Israel. The remote API needs to expose a better way of tracking a submitted task.

(cherry picked from commit 1fb2acfd)

Conflicts:

	core/src/main/java/hudson/model/AbstractProject.java
	core/src/main/java/hudson/model/ParametersDefinitionProperty.java

(cherry picked from commit 45f9de0f)

[JENKINS-13536] I think the proper thing to do is to use the Accept header, not the Content-Type header.

When a client uses the buildWithParameters API and request a json output, return the job definition as a json string instead of doing a redirect on the job page.

So that parameter definitions can define optional parameters.

    record userId not username.

Just import changes, from hudson.model.Jenkins -> jenkins.model.Jenkins,
and Javadoc comments.
Signed-off-by: NNigel Magnay <nigel.magnay@gmail.com>

Signed-off-by: NNigel Magnay <nigel.magnay@gmail.com>

user supplied cause text for build via authentication token, just as /build does.


git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@33032 71c3de6d-444a-0410-be80-ed276b4c234a

parameterized build via doBuild (delay was only supported via buildWithParameters)


git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@31544 71c3de6d-444a-0410-be80-ed276b4c234a

form and a Build button that results in error.  index.jelly should only be accessed
via /build (shows index.jelly via _doBuild in this class) where the Build button works.


git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@30453 71c3de6d-444a-0410-be80-ed276b4c234a

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@29665 71c3de6d-444a-0410-be80-ed276b4c234a

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@25771 71c3de6d-444a-0410-be80-ed276b4c234a

- introduced SimpleParameterDefinition to eliminate the common code

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@23543 71c3de6d-444a-0410-be80-ed276b4c234a

add some copyright headers, some tab->ws


git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@21654 71c3de6d-444a-0410-be80-ed276b4c234a

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git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@15458 71c3de6d-444a-0410-be80-ed276b4c234a

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@15291 71c3de6d-444a-0410-be80-ed276b4c234a

We now add a CauseAction to each job, and a summary.jelly file which renders
the cause on any job with an explanation.


git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@15150 71c3de6d-444a-0410-be80-ed276b4c234a

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