TT#53701 Transition perl module package into a libfoo-perl package

The current ngcp-api-tools package name seems to indicate this contains
some actual tool, but it only provides perl modules. Let's rename it to
clarify its actual intent.

At the same time we demote the ngcp-panel from a Depends to a
Recommends, because this is an HTTP client and can be used from a host
that has no panel installed against a host that has it. And remove the
ngcp-api-tools provides as we are not providing any tool.

Change-Id: I3fd3854a91cc680f71d5465bc7c397f292f7b95a

debian/control

@@ -8,28 +8,38 @@ Build-Depends:
 Standards-Version: 3.9.8
 Homepage: https://www.sipwise.com/
 
-Package: ngcp-api-tools
+Package: libngcp-api-client-perl
 Architecture: all
 Depends:
- ngcp-panel,
  ${misc:Depends},
  ${perl:Depends},
-Provides:
- ngcp-api-tools,
+Recommends:
+ ngcp-panel,
 Conflicts:
  ngcp-ossbss,
  ngcp-www-admin (<= 2),
 Replaces:
+ ngcp-api-tools,
  ngcp-ossbss,
-Description: NGCP REST API related tools
- This package contains files needed by all interface modules on
- NGCP management hosts.
+Section: perl
+Description: NGCP REST API client module
+ This package contains the NGCP::API::Client module needed by all interface
+ modules on NGCP management hosts.
+
+Package: ngcp-api-tools
+Architecture: all
+Depends:
+ libngcp-api-client-perl,
+Description: transitional dummy package
+ This package has been renamed to libngcp-api-client-perl. It can be safely
+ removed once it is not depended on by other packages.
 
 Package: ngcp-billing-tools
 Architecture: all
 Depends:
  ${misc:Depends},
  ${perl:Depends},
+ libngcp-api-client-perl,
 Provides:
  ngcp-api-tools,
 Conflicts:
@@ -40,15 +50,16 @@ Replaces:
  ngcp-ossbss,
 Breaks:
  ngcp-ossbss-billing (<< 3.19),
-Description: NGCP Billing related tools
- This package contains files needed by all interface modules on
- NGCP management hosts.
+Description: NGCP billing related tools
+ This package contains billing related tools that use the NGCP API,
+ needed by all interface modules on NGCP management hosts.
 
 Package: ngcp-provisioning-tools
 Architecture: all
 Depends:
  ${misc:Depends},
  ${perl:Depends},
+ libngcp-api-client-perl,
 Provides:
  ngcp-api-tools,
 Conflicts:
@@ -59,6 +70,6 @@ Breaks:
  ngcp-ossbss-clients-perl (<< 3.19),
 Replaces:
  ngcp-ossbss,
-Description: NGCP Provisioning related tools
- This package contains files needed by all interface modules on
- NGCP management hosts.
+Description: NGCP provisioning related tools
+ This package contains provisioning tools that use the NGCP API,
+ needed by all interface modules on NGCP management hosts.