I've Got Nifi Registry 0.5.0 Installed alongside my Nifi 1.9.2 Cluster and versioning control working correctly. However when it comes to the registry pushing to the git repository we see the following.

```
2020-03-02 10:19:53,183 ERROR [GitFlowMetaData Push thread] o.a.n.r.p.flow.git.GitFlowMetaData Failed to push commits to origin due to org.eclipse.jgit.api.errors.TransportException: https://svc_nifi@gitlab.intranet.net/gitlab/nifi/flows.git: Secure connection to https://svc_nifi@gitlab.intranet.net/gitlab/nifi/flows.git could not be stablished because of SSL problems
org.eclipse.jgit.api.errors.TransportException: https://svc_nifi@gitlab.intranet.net/gitlab/nifi/flows.git: Secure connection to https://svc_nifi@gitlab.intranet.net/gitlab/nifi/flows.git could not be stablished because of SSL problems
        at org.eclipse.jgit.api.PushCommand.call(PushCommand.java:180)
        at org.apache.nifi.registry.provider.flow.git.GitFlowMetaData.lambda$startPushThread$1(GitFlowMetaData.java:225)
        at org.apache.nifi.registry.provider.flow.git.GitFlowMetaData$$Lambda$370/853913427.run(Unknown Source)
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
        at java.util.concurrent.FutureTask.runAndReset(Unknown Source)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(Unknown Source)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)
Caused by: org.eclipse.jgit.errors.TransportException: https://svc_nifi@gitlab.intranet.net/gitlab/nifi/flows.git: Secure connection to https://svc_nifi@gitlab.intranet.net/gitlab/nifi/flows.git could not be stablished because of SSL problems
        at org.eclipse.jgit.transport.TransportHttp.handleSslFailure(TransportHttp.java:617)
        at org.eclipse.jgit.transport.TransportHttp.connect(TransportHttp.java:567)
        at org.eclipse.jgit.transport.TransportHttp.openPush(TransportHttp.java:435)
        at org.eclipse.jgit.transport.PushProcess.execute(PushProcess.java:160)
        at org.eclipse.jgit.transport.Transport.push(Transport.java:1344)
        at org.eclipse.jgit.api.PushCommand.call(PushCommand.java:169)
        ... 9 common frames omitted
Caused by: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.ssl.Alerts.getSSLException(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
        at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
        at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
        at sun.security.ssl.Handshaker.processLoop(Unknown Source)
        at sun.security.ssl.Handshaker.process_record(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
        at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
        at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
        at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
        at java.net.HttpURLConnection.getResponseCode(Unknown Source)
        at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
        at org.eclipse.jgit.transport.http.JDKHttpConnection.getResponseCode(JDKHttpConnection.java:108)
        at org.eclipse.jgit.util.HttpSupport.response(HttpSupport.java:205)
        at org.eclipse.jgit.transport.TransportHttp.connect(TransportHttp.java:498)
        ... 13 common frames omitted
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
        at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
        at sun.security.validator.Validator.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
        at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
        ... 30 common frames omitted
Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at sun.security.provider.certpath.SunCertPathBuilder.build(Unknown Source)
        at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(Unknown Source)
        at java.security.cert.CertPathBuilder.build(Unknown Source)
        ... 36 common frames omitted

```

I've tried adding the SSL cert to both the key and trust stores (the ones configured in nifi-registry.properties). I know I can work with the git repository on the server as I was able to clone it locally. The git server is also using the same Root CA which is in the trust store.

My providers.xml config is:

```
<flowPersistenceProvider>
    <class>org.apache.nifi.registry.provider.flow.git.GitFlowPersistenceProvider</class>
    <property name="Flow Storage Directory">/home/nifi/flows</property>
    <property name="Remote To Push">origin</property>
    <property name="Remote Access User">svc_nifi</property>
    <property name="Remote Access Password"><password></property>
</flowPersistenceProvider>

```